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Vulnerability · Published Jul 12, 2022 · Assigned by siemens

CVE-2022-26647

High 8.8

In plain English

A high-severity weak randomness 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 1.2% (higher than 68% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High
Exploit odds (30 days)1.2%top 32.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A vulnerability has been identified in SCALANCE X200-4P IRT (All versions < V5.5.2), SCALANCE X201-3P IRT (All versions < V5.5.2), SCALANCE X201-3P IRT PRO (All versions < V5.5.2), SCALANCE X202-2IRT (All versions < V5.5.2), SCALANCE X202-2IRT (All versions < V5.5.2), SCALANCE X202-2P IRT (All versions < V5.5.2), SCALANCE X202-2P IRT PRO (All versions < V5.5.2), SCALANCE X204-2 (All versions < V5.2.6), SCALANCE X204-2FM (All versions < V5.2.6), SCALANCE X204-2LD (All versions < V5.2.6), SCALANCE X204-2LD TS (All versions < V5.2.6), SCALANCE X204-2TS (All versions < V5.2.6), SCALANCE X204IRT (All versions < V5.5.2), SCALANCE X204IRT (All versions < V5.5.2), SCALANCE X204IRT PRO (All versions < V5.5.2), SCALANCE X206-1 (All versions < V5.2.6), SCALANCE X206-1LD (All versions < V5.2.6), SCALANCE X208 (All versions < V5.2.6), SCALANCE X208PRO (All versions < V5.2.6), SCALANCE X212-2 (All versions < V5.2.6), SCALANCE X212-2LD (All versions < V5.2.6), SCALANCE X216 (All versions < V5.2.6), SCALANCE X224 (All versions < V5.2.6), SCALANCE XF201-3P IRT (All versions < V5.5.2), SCALANCE XF202-2P IRT (All versions < V5.5.2), SCALANCE XF204 (All versions < V5.2.6), SCALANCE XF204-2 (All versions < V5.2.6), SCALANCE XF204-2BA IRT (All versions < V5.5.2), SCALANCE XF204IRT (All versions < V5.5.2), SCALANCE XF206-1 (All versions < V5.2.6), SCALANCE XF208 (All versions < V5.2.6). The webserver of affected devices calculates session ids and nonces in an insecure manner. This could allow an unauthenticated remote attacker to brute-force session ids and hijack existing sessions.

Affected products (as reported)

VendorProductVersions
Siemens SCALANCE X200-4P IRT All versions < V5.5.2
Siemens SCALANCE X201-3P IRT All versions < V5.5.2
Siemens SCALANCE X201-3P IRT PRO All versions < V5.5.2
Siemens SCALANCE X202-2IRT All versions < V5.5.2
Siemens SCALANCE X202-2IRT All versions < V5.5.2
Siemens SCALANCE X202-2P IRT All versions < V5.5.2
Siemens SCALANCE X202-2P IRT PRO All versions < V5.5.2
Siemens SCALANCE X204-2 All versions < V5.2.6
Siemens SCALANCE X204-2FM All versions < V5.2.6
Siemens SCALANCE X204-2LD All versions < V5.2.6
Siemens SCALANCE X204-2LD TS All versions < V5.2.6
Siemens SCALANCE X204-2TS All versions < V5.2.6
Siemens SCALANCE X204IRT All versions < V5.5.2
Siemens SCALANCE X204IRT All versions < V5.5.2
Siemens SCALANCE X204IRT PRO All versions < V5.5.2
Siemens SCALANCE X206-1 All versions < V5.2.6
Siemens SCALANCE X206-1LD All versions < V5.2.6
Siemens SCALANCE X208 All versions < V5.2.6
Siemens SCALANCE X208PRO All versions < V5.2.6
Siemens SCALANCE X212-2 All versions < V5.2.6
Siemens SCALANCE X212-2LD All versions < V5.2.6
Siemens SCALANCE X216 All versions < V5.2.6
Siemens SCALANCE X224 All versions < V5.2.6
Siemens SCALANCE XF201-3P IRT All versions < V5.5.2
Siemens SCALANCE XF202-2P IRT All versions < V5.5.2
Siemens SCALANCE XF204 All versions < V5.2.6
Siemens SCALANCE XF204-2 All versions < V5.2.6
Siemens SCALANCE XF204-2BA IRT All versions < V5.5.2
Siemens SCALANCE XF204IRT All versions < V5.5.2
Siemens SCALANCE XF206-1 All versions < V5.2.6

Weakness: CWE-330 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

References