Critical severity · published Apr 22, 2021
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),…
9.8
CVSS
2.1%
EPSS
No
On KEV
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 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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.1% · higher than 82% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SX
Scalance X200-4p Irt Firmware · Siemens
before 5.5.1 · source: NVD
SX
Scalance X201-3p Irt Firmware · Siemens
before 5.5.1 · source: NVD
SX
Scalance X201-3p Irt Pro Firmware · Siemens
before 5.5.1 · source: NVD
SX
Scalance X202-2 Irt Firmware · Siemens
before 5.5.1 · source: NVD
SX
Scalance X202-2p Irt Firmware · Siemens
before 5.5.1 · source: NVD
SX
Scalance X202-2p Irt Pro Firmware · Siemens
before 5.5.1 · source: NVD
SX
Scalance X204 Irt Firmware · Siemens
before 5.5.1 · source: NVD
SX
Scalance X204 Irt Pro Firmware · Siemens
before 5.5.1 · source: NVD
SX
Scalance X204-2 Firmware · Siemens
before 5.2.5 · source: NVD
SX
Scalance X204-2fm Firmware · Siemens
before 5.2.5 · source: NVD
SX
Scalance X204-2ld Firmware · Siemens
before 5.2.5 · source: NVD
SX
Scalance X204-2ld TS Firmware · Siemens
before 5.2.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-25669
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-25669
Patch
https://cert-portal.siemens.com/productcert/pdf/ssa-187092.pdf
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