# What is CVE-2019-10929? > CVE-2019-10929 is a medium-severity flaw (CVSS 5.9) in Simatic Cp 1626 from Siemens, published on 13 August 2019. 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 1.0%. If you run an affected version, plan in the vendor’s fix. Canonical page: https://www.precursorintelligence.com/what-is/cve-2019-10929 ## 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 5.9 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:** 1.0% (latest exploit-likelihood forecast) - **Published:** 13 August 2019 - **Record last updated:** 10 August 2022 - **Main product:** Simatic Cp 1626 from Siemens - **Affected products:** 33 ## What is CVE-2019-10929? 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 change data. ### The official description A vulnerability has been identified in SIMATIC CP 1626 (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants) (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V20.8), SIMATIC HMI Panel (incl. SIPLUS variants) (All versions), SIMATIC NET PC Software V14 (All versions < V14 SP1 Update 14), SIMATIC NET PC Software V15 (All versions), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions < V4.4.0), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V2.8.1), SIMATIC S7-1500 Software Controller (All versions < V20.8), SIMATIC S7-PLCSIM Advanced (All versions < V3.0), SIMATIC STEP 7 (TIA Portal) (All versions < V16), SIMATIC WinCC (TIA Portal) (All versions < V16), SIMATIC WinCC OA (All versions < V3.16 P013), SIMATIC WinCC Runtime Advanced (All versions < V16), SIMATIC WinCC Runtime Professional (All versions < V16), TIM 1531 IRC (incl. SIPLUS NET variants) (All versions < V2.1). Affected devices contain a message protection bypass vulnerability due to certain properties in the calculation used for integrity protection. This could allow an attacker in a Man-in-the-Middle position to modify network traffic sent on port 102/tcp to the affected devices. ### What kind of flaw is it? - CWE-327: Use of a Broken or Risky Cryptographic Algorithm ### How an attack on it works - Where an attacker can be: Anywhere on the internet - How hard it is to pull off: Hard: conditions must line up - Login needed first: No login needed - Does someone have to click: No, nobody has to do anything - What an attacker gets: Can change data Severity vector: `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N` ## Is CVE-2019-10929 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 1.0%. That can change at any time, which is why we keep watching. Exploit likelihood over the last 7 days: 1.0%, 1.0%, 1.0%, 1.0%, 1.0%, 1.0%, 1.0%. ### Timeline - 13 August 2019: Published - 10 August 2022: Record last updated ### How Precursor Intelligence ranks it CVE-2019-10929 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-2019-10929? The published record lists 33 products. Versions are as published: "before 16" means every version up to, but not including, 16. - [Simatic Cp 1626](https://www.precursorintelligence.com/product/siemens/simatic_cp_1626) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic Wincc Open Architecture](https://www.precursorintelligence.com/product/siemens/simatic_wincc_open_architecture) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Application): up to 3.15, 3.16, 3.16-patch_12 - [Simatic Cp 1626 Firmware](https://www.precursorintelligence.com/product/siemens/simatic_cp_1626_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions - [Simatic Et 200sp Open Controller CPU 1515sp Pc](https://www.precursorintelligence.com/product/siemens/simatic_et_200sp_open_controller_cpu_1515sp_pc) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic Et 200sp Open Controller CPU 1515sp Pc Firmware](https://www.precursorintelligence.com/product/siemens/simatic_et_200sp_open_controller_cpu_1515sp_pc_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions - [Simatic Et 200sp Open Controller CPU 1515sp Pc2](https://www.precursorintelligence.com/product/siemens/simatic_et_200sp_open_controller_cpu_1515sp_pc2) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic Et 200sp Open Controller CPU 1515sp Pc2 Firmware](https://www.precursorintelligence.com/product/siemens/simatic_et_200sp_open_controller_cpu_1515sp_pc2_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions - [Simatic HMI Panel](https://www.precursorintelligence.com/product/siemens/simatic_hmi_panel) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic HMI Panel Firmware](https://www.precursorintelligence.com/product/siemens/simatic_hmi_panel_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions - [Simatic Net Pc](https://www.precursorintelligence.com/product/siemens/simatic_net_pc) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Application): before 16 - [Simatic S7-1200 CPU 1211c](https://www.precursorintelligence.com/product/siemens/simatic_s7-1200_cpu_1211c) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic S7-1200 CPU 1211c Firmware](https://www.precursorintelligence.com/product/siemens/simatic_s7-1200_cpu_1211c_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): up to 4.0 - [Simatic S7-1200 CPU 1212c](https://www.precursorintelligence.com/product/siemens/simatic_s7-1200_cpu_1212c) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic S7-1200 CPU 1212c Firmware](https://www.precursorintelligence.com/product/siemens/simatic_s7-1200_cpu_1212c_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): up to 4.0 - [Simatic S7-1200 CPU 1214c](https://www.precursorintelligence.com/product/siemens/simatic_s7-1200_cpu_1214c) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic S7-1200 CPU 1214c Firmware](https://www.precursorintelligence.com/product/siemens/simatic_s7-1200_cpu_1214c_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): up to 4.0 - [Simatic S7-1200 CPU 1215c](https://www.precursorintelligence.com/product/siemens/simatic_s7-1200_cpu_1215c) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic S7-1200 CPU 1215c Firmware](https://www.precursorintelligence.com/product/siemens/simatic_s7-1200_cpu_1215c_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): up to 4.0 - [Simatic S7-1200 CPU 1217c](https://www.precursorintelligence.com/product/siemens/simatic_s7-1200_cpu_1217c) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic S7-1200 CPU 1217c Firmware](https://www.precursorintelligence.com/product/siemens/simatic_s7-1200_cpu_1217c_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): up to 4.0 - [Simatic S7-1500](https://www.precursorintelligence.com/product/siemens/simatic_s7-1500) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Application): all versions - [Simatic S7-1500 CPU 1511c](https://www.precursorintelligence.com/product/siemens/simatic_s7-1500_cpu_1511c) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic S7-1500 CPU 1511c Firmware](https://www.precursorintelligence.com/product/siemens/simatic_s7-1500_cpu_1511c_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions - [Simatic S7-1500 CPU 1512c](https://www.precursorintelligence.com/product/siemens/simatic_s7-1500_cpu_1512c) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic S7-1500 CPU 1512c Firmware](https://www.precursorintelligence.com/product/siemens/simatic_s7-1500_cpu_1512c_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions - [Simatic S7-1500 CPU 1518](https://www.precursorintelligence.com/product/siemens/simatic_s7-1500_cpu_1518) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic S7-1500 CPU 1518 Firmware](https://www.precursorintelligence.com/product/siemens/simatic_s7-1500_cpu_1518_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions - [Simatic S7-Plcsim Advanced](https://www.precursorintelligence.com/product/siemens/simatic_s7-plcsim_advanced) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Application): all versions - [Simatic Step 7](https://www.precursorintelligence.com/product/siemens/simatic_step_7) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Application): before 16 - [Simatic Tim 1531 Irc](https://www.precursorintelligence.com/product/siemens/simatic_tim_1531_irc) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic Tim 1531 Irc Firmware](https://www.precursorintelligence.com/product/siemens/simatic_tim_1531_irc_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 2.1 - [Simatic Wincc](https://www.precursorintelligence.com/product/siemens/simatic_wincc) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Application): before 16 - [Simatic Wincc Runtime](https://www.precursorintelligence.com/product/siemens/simatic_wincc_runtime) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Application): all versions ## How do I fix CVE-2019-10929? 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 advisories and patch notes 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 - [cert-portal.siemens.com](https://cert-portal.siemens.com/productcert/pdf/ssa-232418.pdf) (Vendor advisory) - [cert-portal.siemens.com](https://cert-portal.siemens.com/productcert/pdf/ssa-273799.pdf) (Vendor advisory) - [us-cert.gov](https://www.us-cert.gov/ics/advisories/icsa-19-344-04) (Third-party advisory, Government resource) ## Questions ### What is CVE-2019-10929? CVE-2019-10929 is a medium-severity flaw in Simatic Cp 1626 from Siemens, published on 13 August 2019. It can be attacked from anywhere on the internet without logging in, and nobody has to click anything. If it works, the attacker can change data. ### How serious is CVE-2019-10929? It scores 5.9 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2019-10929 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-2019-10929 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 1.0%. That can change at any time, which is why we keep watching. ### Which versions does CVE-2019-10929 affect? For Simatic Cp 1626 from Siemens: version not specified. The record lists 33 products in all, each with its versions, under "Who is affected" on this page. ### How do I fix CVE-2019-10929? 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-2019-10929 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