Buffer overflow in Siemens Simatic Cp 1242-7 V2
CVE-2022-34819
A vulnerability has been identified in SIMATIC CP 1242-7 V2 (All versions < V3.3.46), SIMATIC CP 1243-1 (All versions < V3.3.46), SIMATIC CP 1243-7 LTE EU (All versions < V3.3.46), SIMATIC CP 1243-7 LTE US (All versions < V3.3.46), SIMATIC CP 1243-8 IRC (All versions < V3.3.46), SIMATIC CP 1542SP-1 IRC (All versions >= V2.0 < V2.2.28), SIMATIC CP 1543-1 (All versions < V3.0.22), SIMATIC CP 1543SP-1 (All versions >= V2.0 < V2.2.28), SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL (All versions >= V2.0 < V2.2.28), SIPLUS ET 200SP CP 1543SP-1 ISEC (All versions >= V2.0 < V2.2.28), SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL (All versions >= V2.0 < V2.2.28), SIPLUS NET CP 1242-7 V2 (All versions < V3.3.46), SIPLUS NET CP 1543-1 (All versions < V3.0.22), SIPLUS S7-1200 CP 1243-1 (All versions < V3.3.46), SIPLUS S7-1200 CP 1243-1 RAIL (All versions < V3.3.46). The application lacks proper validation of user-supplied data when parsing specific messages. This could result in a heap-based buffer overflow. An attacker could leverage this vulnerability to execute code in the context of device.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.021 (81.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.021 · change: +0.001
Affected products
- Siemens Simatic Cp 1242-7 V2 — versions All versions < V3.3.46
- Siemens Simatic Cp 1242-7 V2
- Siemens Simatic Cp 1242-7 V2 Firmware
- Siemens Simatic Cp 1243-1 — versions All versions < V3.3.46
- Siemens Simatic Cp 1243-1
- Siemens Simatic Cp 1243-1 Firmware
- Siemens Simatic Cp 1243-7 Lte Eu — versions All versions < V3.3.46
- Siemens Simatic Cp 1243-7 Lte Eu
- Siemens Simatic Cp 1243-7 Lte Eu Firmware
- Siemens Simatic Cp 1243-7 Lte Us — versions All versions < V3.3.46
Weakness classification (CWE)
References
- cert-portal.siemens.com/productcert/pdf/ssa-517377.pdf (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-34819?
- CVE-2022-34819 is a critical-severity vulnerability in Siemens Simatic Cp 1242-7 V2, classified under Heap-based Buffer Overflow. CVSS score: 10.0/10. Published 2022-07-12.
- How severe is CVE-2022-34819?
- Critical severity. CVSS v3 base score is 10.0 out of 10.