Buffer overflow in Siemens Scalance X200-4p Irt
CVE-2021-25669
A vulnerability has been identified in SCALANCE X200-4P IRT (All versions < 5.5.1), SCALANCE X201-3P IRT (All versions < 5.5.1), SCALANCE X201-3P IRT PRO (All versions < 5.5.1), SCALANCE X202-2 IRT (All versions < 5.5.1), SCALANCE X202-2P IRT (incl. SIPLUS NET variant) (All versions < 5.5.1), SCALANCE X202-2P IRT PRO (All versions < 5.5.1), SCALANCE X204 IRT (All versions < 5.5.1), SCALANCE X204 IRT PRO (All versions < 5.5.1), SCALANCE X204-2 (incl. SIPLUS NET variant) (All versions < V5.2.5), SCALANCE X204-2FM (All versions < V5.2.5), SCALANCE X204-2LD (incl. SIPLUS NET variant) (All versions < V5.2.5), SCALANCE X204-2LD TS (All versions < V5.2.5), SCALANCE X204-2TS (All versions < V5.2.5), SCALANCE X206-1 (All versions < V5.2.5), SCALANCE X206-1LD (All versions < V5.2.5), SCALANCE X208 (incl. SIPLUS NET variant) (All versions < V5.2.5), SCALANCE X208PRO (All versions < V5.2.5), SCALANCE X212-2 (incl. SIPLUS NET variant) (All versions < V5.2.5), SCALANCE X212-2LD (All versions < V5.2.5), SCALANCE X216 (All versions < V5.2.5), SCALANCE X224 (All versions < V5.2.5), SCALANCE XF201-3P IRT (All versions < 5.5.1), SCALANCE XF202-2P IRT (All versions < 5.5.1), SCALANCE XF204 (All versions < V5.2.5), SCALANCE XF204 IRT (All versions < 5.5.1), SCALANCE XF204-2 (incl. SIPLUS NET variant) (All versions < V5.2.5), SCALANCE XF204-2BA IRT (All versions < 5.5.1), SCALANCE XF206-1 (All versions < V5.2.5), SCALANCE XF208 (All versions < V5.2.5). Incorrect processing of POST requests in the web server may write out of bounds in stack. An attacker might leverage this to denial-of-service of the device or remote code execution.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.021 (81.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
- Siemens Scalance X200-4p Irt — versions All versions < 5.5.1
- Siemens Scalance X200-4p Irt
- Siemens Scalance X200-4p Irt Firmware
- Siemens Scalance X201-3p Irt — versions All versions < 5.5.1
- Siemens Scalance X201-3p Irt
- Siemens Scalance X201-3p Irt Firmware
- Siemens Scalance X201-3p Irt Pro — versions All versions < 5.5.1
- Siemens Scalance X201-3p Irt Pro
- Siemens Scalance X201-3p Irt Pro Firmware
- Siemens Scalance X202-2 Irt — versions All versions < 5.5.1
Weakness classification (CWE)
References
- cert-portal.siemens.com/productcert/pdf/ssa-187092.pdf (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-25669?
- CVE-2021-25669 is a critical-severity vulnerability in Siemens Scalance X200-4p Irt, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2021-04-22.
- How severe is CVE-2021-25669?
- Critical severity. CVSS v3 base score is 9.8 out of 10.