# What is CVE-2021-44261? > CVE-2021-44261 is a medium-severity flaw (CVSS 5.3) in Wac104 from Netgear, published on 17 March 2022. 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 20%. If you run an affected version, plan in the vendor’s fix. Canonical page: https://www.precursorintelligence.com/what-is/cve-2021-44261 ## At a glance - **Verdict:** Fix this soon. Not confirmed as exploited yet, but serious or likely enough that it should not wait for a quiet month. - **Precursor Intelligence risk score:** 44 out of 100 (Medium); action: Plan remediation. Kept up to date as the evidence changes. - **Severity:** Medium (CVSS 5.3 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:** 20% (latest exploit-likelihood forecast) - **Published:** 17 March 2022 - **Record last updated:** 23 March 2022 - **Main product:** Wac104 from Netgear - **Affected products:** 10 ## What is CVE-2021-44261? In plain terms It can be attacked from anywhere on the internet without logging in, and nobody has to click anything. If it works, the attacker can read some data. ### The official description A vulnerability is in the 'BRS_top.html' page of the Netgear W104, version WAC104-V1.0.4.13, which can allow a remote attacker to access this page without any authentication. When processed, it exposes firmware version information for the device. ### What kind of flaw is it? - CWE-306: Missing Authentication for Critical Function ### How an attack on it works - Where an attacker can be: Anywhere on the internet - How hard it is to pull off: Easy: no special conditions - Login needed first: No login needed - Does someone have to click: No, nobody has to do anything - What an attacker gets: Can read some data Severity vector: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N` ## Is CVE-2021-44261 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 20%. That can change at any time, which is why we keep watching. Exploit likelihood over the last 7 days: 20%, 20%, 20%, 20%, 20%, 20%, 20%. ### Timeline - 17 March 2022: Published - 23 March 2022: Record last updated - 16 June 2026: Exploit likelihood jumped ### How Precursor Intelligence ranks it CVE-2021-44261 scores **44 out of 100 (Medium)**, with the action "Plan remediation". 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: key context - Real threat activity around it: key context 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-2021-44261? The published record lists 10 products. - [Wac104](https://www.precursorintelligence.com/product/netgear/wac104) by [Netgear](https://www.precursorintelligence.com/vendors/netgear) (Hardware): version not specified - [R6220](https://www.precursorintelligence.com/product/netgear/r6220) by [Netgear](https://www.precursorintelligence.com/vendors/netgear) (Hardware): version not specified - [R6220 Firmware](https://www.precursorintelligence.com/product/netgear/r6220_firmware) by [Netgear](https://www.precursorintelligence.com/vendors/netgear) (Operating system): up to 1.1.0.34_1.0.1 - [R6900](https://www.precursorintelligence.com/product/netgear/r6900) by [Netgear](https://www.precursorintelligence.com/vendors/netgear) (Hardware): v2 - [R6900 Firmware](https://www.precursorintelligence.com/product/netgear/r6900_firmware) by [Netgear](https://www.precursorintelligence.com/vendors/netgear) (Operating system): all versions - [R7450](https://www.precursorintelligence.com/product/netgear/r7450) by [Netgear](https://www.precursorintelligence.com/vendors/netgear) (Hardware): version not specified - [R7450 Firmware](https://www.precursorintelligence.com/product/netgear/r7450_firmware) by [Netgear](https://www.precursorintelligence.com/vendors/netgear) (Operating system): all versions - [R7800](https://www.precursorintelligence.com/product/netgear/r7800) by [Netgear](https://www.precursorintelligence.com/vendors/netgear) (Hardware): version not specified - [R7800 Firmware](https://www.precursorintelligence.com/product/netgear/r7800_firmware) by [Netgear](https://www.precursorintelligence.com/vendors/netgear) (Operating system): all versions - [Wac104 Firmware](https://www.precursorintelligence.com/product/netgear/wac104_firmware) by [Netgear](https://www.precursorintelligence.com/vendors/netgear) (Operating system): up to 1.0.4.13 ## How do I fix CVE-2021-44261? 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 - [netgear.com](https://www.netgear.com/about/security/) (Vendor advisory) - [github.com](https://github.com/zer0yu/CVE_Request/blob/master/netgear/Netgear_W104_unauthorized_access_vulnerability_first.md) (Exploit, Third-party advisory) ## Questions ### What is CVE-2021-44261? CVE-2021-44261 is a medium-severity flaw in Wac104 from Netgear, published on 17 March 2022. It can be attacked from anywhere on the internet without logging in, and nobody has to click anything. If it works, the attacker can read some data. ### How serious is CVE-2021-44261? It scores 5.3 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2021-44261 is 44 out of 100, which is Medium. Its action is "Plan remediation". Not confirmed as exploited yet, but serious or likely enough that it should not wait for a quiet month. ### Is CVE-2021-44261 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 20%. That can change at any time, which is why we keep watching. ### Which versions does CVE-2021-44261 affect? For Wac104 from Netgear: version not specified. The record lists 10 products in all, each with its versions, under "Who is affected" on this page. ### How do I fix CVE-2021-44261? 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-2021-44261 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