# What is CVE-2023-31346? > CVE-2023-31346 is a medium-severity flaw (CVSS 6.0) in Epyc 7773x Firmware from Amd, published on 13 February 2024. It is not on the list of flaws known to be exploited today. The latest forecast puts its chance of use in the next 30 days at 0.3%. If you run an affected version, plan in the vendor’s fix. Canonical page: https://www.precursorintelligence.com/what-is/cve-2023-31346 ## At a glance - **Verdict:** Plan it in. No sign of exploitation and a low forecast. Patch it in your normal update cycle. - **Precursor Intelligence risk score:** 24 out of 100 (Low); action: Monitor. Kept up to date as the evidence changes. - **Severity:** Medium (CVSS 6.0 out of 10) - **Known to be exploited:** No, not on the list of flaws known to be exploited today - **Chance of use in the next 30 days:** 0.3% (latest exploit-likelihood forecast) - **Published:** 13 February 2024 - **Record last updated:** 17 June 2026 - **Main product:** Epyc 7773x Firmware from Amd - **Affected products:** 62 ## What is CVE-2023-31346? In plain terms An attacker has to be already on the device with an administrator account, and nobody has to click anything. If it works, the attacker can read data. ### The official description Failure to initialize memory in SEV Firmware may allow a privileged attacker to access stale data from other guests. ### What kind of flaw is it? - CWE-284: Improper Access Control ### How an attack on it works - Where an attacker can be: Already on the device - How hard it is to pull off: Easy: no special conditions - Login needed first: An administrator account - Does someone have to click: No, nobody has to do anything - What an attacker gets: Can read data Severity vector: `CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N` ## Is CVE-2023-31346 being exploited? Not that we know of It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 0.3%. That can change at any time, which is why we keep watching. Exploit likelihood over the last 7 days: 0.3%, 0.3%, 0.3%, 0.3%, 0.3%, 0.3%, 0.3%. ### Timeline - 13 February 2024: Published - 17 June 2026: Record last updated ### How Precursor Intelligence ranks it CVE-2023-31346 scores **24 out of 100 (Low)**, with the action "Monitor". Every published flaw gets a risk score from 0 to 100, kept up to date as the evidence changes. Four things go into the score, from the one that counts most to the ones that count less: - Evidence it is being exploited: biggest factor - How severe it is: strong factor - How widely exposed it is: smaller factor - Threat activity around it: smaller factor 85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score. When this flaw matches software you track, it lands in your list with its score and the reasons behind it. ## Who is affected by CVE-2023-31346? The published record lists 62 products. Versions are as published: "before milanpi_1.0.0.c" means every version up to, but not including, milanpi_1.0.0.c. - [Epyc 7773x Firmware](https://www.precursorintelligence.com/product/amd/epyc_7773x_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7203 Firmware](https://www.precursorintelligence.com/product/amd/epyc_7203_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7203p Firmware](https://www.precursorintelligence.com/product/amd/epyc_7203p_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 72f3 Firmware](https://www.precursorintelligence.com/product/amd/epyc_72f3_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7303 Firmware](https://www.precursorintelligence.com/product/amd/epyc_7303_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7303p Firmware](https://www.precursorintelligence.com/product/amd/epyc_7303p_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7313 Firmware](https://www.precursorintelligence.com/product/amd/epyc_7313_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7313p Firmware](https://www.precursorintelligence.com/product/amd/epyc_7313p_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7343 Firmware](https://www.precursorintelligence.com/product/amd/epyc_7343_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7373x Firmware](https://www.precursorintelligence.com/product/amd/epyc_7373x_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 73f3 Firmware](https://www.precursorintelligence.com/product/amd/epyc_73f3_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7413 Firmware](https://www.precursorintelligence.com/product/amd/epyc_7413_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7443 Firmware](https://www.precursorintelligence.com/product/amd/epyc_7443_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7443p Firmware](https://www.precursorintelligence.com/product/amd/epyc_7443p_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7453 Firmware](https://www.precursorintelligence.com/product/amd/epyc_7453_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7473x Firmware](https://www.precursorintelligence.com/product/amd/epyc_7473x_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 74f3 Firmware](https://www.precursorintelligence.com/product/amd/epyc_74f3_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7513 Firmware](https://www.precursorintelligence.com/product/amd/epyc_7513_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7543 Firmware](https://www.precursorintelligence.com/product/amd/epyc_7543_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7543p Firmware](https://www.precursorintelligence.com/product/amd/epyc_7543p_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7573x Firmware](https://www.precursorintelligence.com/product/amd/epyc_7573x_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 75f3 Firmware](https://www.precursorintelligence.com/product/amd/epyc_75f3_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7643 Firmware](https://www.precursorintelligence.com/product/amd/epyc_7643_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7643p Firmware](https://www.precursorintelligence.com/product/amd/epyc_7643p_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7663 Firmware](https://www.precursorintelligence.com/product/amd/epyc_7663_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7663p Firmware](https://www.precursorintelligence.com/product/amd/epyc_7663p_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7713 Firmware](https://www.precursorintelligence.com/product/amd/epyc_7713_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7713p Firmware](https://www.precursorintelligence.com/product/amd/epyc_7713p_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 7763 Firmware](https://www.precursorintelligence.com/product/amd/epyc_7763_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before milanpi_1.0.0.c - [Epyc 8024p Firmware](https://www.precursorintelligence.com/product/amd/epyc_8024p_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 8024pn Firmware](https://www.precursorintelligence.com/product/amd/epyc_8024pn_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 8124p Firmware](https://www.precursorintelligence.com/product/amd/epyc_8124p_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 8124pn Firmware](https://www.precursorintelligence.com/product/amd/epyc_8124pn_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 8224p Firmware](https://www.precursorintelligence.com/product/amd/epyc_8224p_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 8224pn Firmware](https://www.precursorintelligence.com/product/amd/epyc_8224pn_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 8324p Firmware](https://www.precursorintelligence.com/product/amd/epyc_8324p_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 8324pn Firmware](https://www.precursorintelligence.com/product/amd/epyc_8324pn_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 8434p Firmware](https://www.precursorintelligence.com/product/amd/epyc_8434p_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 8434pn Firmware](https://www.precursorintelligence.com/product/amd/epyc_8434pn_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 8534p Firmware](https://www.precursorintelligence.com/product/amd/epyc_8534p_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 8534pn Firmware](https://www.precursorintelligence.com/product/amd/epyc_8534pn_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9124 Firmware](https://www.precursorintelligence.com/product/amd/epyc_9124_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9174f Firmware](https://www.precursorintelligence.com/product/amd/epyc_9174f_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9184x Firmware](https://www.precursorintelligence.com/product/amd/epyc_9184x_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9224 Firmware](https://www.precursorintelligence.com/product/amd/epyc_9224_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9254 Firmware](https://www.precursorintelligence.com/product/amd/epyc_9254_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9274f Firmware](https://www.precursorintelligence.com/product/amd/epyc_9274f_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9334 Firmware](https://www.precursorintelligence.com/product/amd/epyc_9334_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9354 Firmware](https://www.precursorintelligence.com/product/amd/epyc_9354_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9354p Firmware](https://www.precursorintelligence.com/product/amd/epyc_9354p_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9374f Firmware](https://www.precursorintelligence.com/product/amd/epyc_9374f_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9384x Firmware](https://www.precursorintelligence.com/product/amd/epyc_9384x_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9454 Firmware](https://www.precursorintelligence.com/product/amd/epyc_9454_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9454p Firmware](https://www.precursorintelligence.com/product/amd/epyc_9454p_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9474f Firmware](https://www.precursorintelligence.com/product/amd/epyc_9474f_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9534 Firmware](https://www.precursorintelligence.com/product/amd/epyc_9534_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9554 Firmware](https://www.precursorintelligence.com/product/amd/epyc_9554_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9554p Firmware](https://www.precursorintelligence.com/product/amd/epyc_9554p_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9634 Firmware](https://www.precursorintelligence.com/product/amd/epyc_9634_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9654 Firmware](https://www.precursorintelligence.com/product/amd/epyc_9654_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9654p Firmware](https://www.precursorintelligence.com/product/amd/epyc_9654p_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b - [Epyc 9684x Firmware](https://www.precursorintelligence.com/product/amd/epyc_9684x_firmware) by [Amd](https://www.precursorintelligence.com/vendors/amd) (Operating system): before genoapi_1.0.0.b ## How do I fix CVE-2023-31346? 1. **Check whether you run it.** Compare your versions with the affected products above. Not sure what you run? Precursor Intelligence can work it out from your public website, or you can pick it from a list. 2. **Apply the vendor’s fix.** Install the update named in the vendor’s advisory. We’ve put the advisory first in the list. 3. **If you can’t patch today.** Follow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in. 4. **Keep an eye on it.** Track the product and we tell you as soon as we spot this flaw on the list of exploited flaws, or a jump in its exploit likelihood. ### References - [amd.com](https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3007) (Vendor advisory) ## Questions ### What is CVE-2023-31346? CVE-2023-31346 is a medium-severity flaw in Epyc 7773x Firmware from Amd, published on 13 February 2024. An attacker has to be already on the device with an administrator account, and nobody has to click anything. If it works, the attacker can read data. ### How serious is CVE-2023-31346? It scores 6.0 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2023-31346 is 24 out of 100, which is Low. Its action is "Monitor". No sign of exploitation and a low forecast. Patch it in your normal update cycle. ### Is CVE-2023-31346 being exploited? It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 0.3%. That can change at any time, which is why we keep watching. ### Which versions does CVE-2023-31346 affect? For Epyc 7773x Firmware from Amd: before milanpi_1.0.0.c. The record lists 62 products in all, each with its versions, under "Who is affected" on this page. ### How do I fix CVE-2023-31346? Install the update the vendor names in its advisory, linked first under "How do I fix" on this page. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet. ## Does CVE-2023-31346 affect you? Precursor Intelligence keeps checking for you: - **Tell us what you run.** Pick your software from a list, or let us work it out from your website. - **We match it to every flaw.** Over 400,000 published flaws, checked against your list. - **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it. - **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools. Start free (no card, nothing to install): https://www.precursorintelligence.com/register Book a demo: https://www.precursorintelligence.com/contact