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Vulnerability · Published Apr 22, 2021 · Assigned by siemens

CVE-2021-25668

Critical 9.8

In plain English

A critical-severity heap buffer overflow in SCALANCE X200-4P IRT from Siemens. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.6% (higher than 75% of all known vulnerabilities).

Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)1.6%top 24.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

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 webserver may result in write out of bounds in heap. An attacker might leverage this to cause denial-of-service on the device and potentially remotely execute code.

Affected products (as reported)

VendorProductVersions
Siemens SCALANCE X200-4P IRT All versions < 5.5.1
Siemens SCALANCE X201-3P IRT All versions < 5.5.1
Siemens SCALANCE X201-3P IRT PRO All versions < 5.5.1
Siemens SCALANCE X202-2 IRT All versions < 5.5.1
Siemens SCALANCE X202-2P IRT (incl. SIPLUS NET variant) All versions < 5.5.1
Siemens SCALANCE X202-2P IRT PRO All versions < 5.5.1
Siemens SCALANCE X204 IRT All versions < 5.5.1
Siemens SCALANCE X204 IRT PRO All versions < 5.5.1
Siemens SCALANCE X204-2 (incl. SIPLUS NET variant) All versions < V5.2.5
Siemens SCALANCE X204-2FM All versions < V5.2.5
Siemens SCALANCE X204-2LD (incl. SIPLUS NET variant) All versions < V5.2.5
Siemens SCALANCE X204-2LD TS All versions < V5.2.5
Siemens SCALANCE X204-2TS All versions < V5.2.5
Siemens SCALANCE X206-1 All versions < V5.2.5
Siemens SCALANCE X206-1LD All versions < V5.2.5
Siemens SCALANCE X208 (incl. SIPLUS NET variant) All versions < V5.2.5
Siemens SCALANCE X208PRO All versions < V5.2.5
Siemens SCALANCE X212-2 (incl. SIPLUS NET variant) All versions < V5.2.5
Siemens SCALANCE X212-2LD All versions < V5.2.5
Siemens SCALANCE X216 All versions < V5.2.5
Siemens SCALANCE X224 All versions < V5.2.5
Siemens SCALANCE XF201-3P IRT All versions < 5.5.1
Siemens SCALANCE XF202-2P IRT All versions < 5.5.1
Siemens SCALANCE XF204 All versions < V5.2.5
Siemens SCALANCE XF204 IRT All versions < 5.5.1
Siemens SCALANCE XF204-2 (incl. SIPLUS NET variant) All versions < V5.2.5
Siemens SCALANCE XF204-2BA IRT All versions < 5.5.1
Siemens SCALANCE XF206-1 All versions < V5.2.5
Siemens SCALANCE XF208 All versions < V5.2.5

Weakness: CWE-122

References