Critical severity · published Jan 20, 2022
CVE-2021-44734
Embedded web server input sanitization vulnerability in Lexmark devices through 2021-12-07, which can which can lead to remote code execution on the device
9.8
CVSS
6.2%
EPSS
No
On KEV
Description
Embedded web server input sanitization vulnerability in Lexmark devices through 2021-12-07, which can which can lead to remote code execution on the device.
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)6.2% · higher than 93% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BF
B2236 Firmware · Lexmark
before mslsg.076.294 · source: NVD
BF
B2338 Firmware · Lexmark
before msngm.076.294 · source: NVD
BF
B2442 Firmware · Lexmark
before msngm.076.294 · source: NVD
BF
B2546 Firmware · Lexmark
before msngm.076.294 · source: NVD
BF
B2650 Firmware · Lexmark
before msngm.076.294 · source: NVD
BF
B2865 Firmware · Lexmark
before msngw.076.294 · source: NVD
BF
B3340 Firmware · Lexmark
before mslbd.076.294 · source: NVD
BF
B3442 Firmware · Lexmark
before mslbd.076.294 · source: NVD
CF
C2326 Firmware · Lexmark
before cslbn.076.294 · source: NVD
CF
C3224 Firmware · Lexmark
before cslbl.076.294 · source: NVD
CF
C3326 Firmware · Lexmark
before cslbl.076.294 · source: NVD
CF
C3426 Firmware · Lexmark
before cslbn.076.294 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-44734
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-44734
Vendor Advisory
https://support.lexmark.com/alerts/
Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-22-332/
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CVE-2023-23560
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9.8
CVE-2021-44735
Embedded web server command injection vulnerability in Lexmark devices through 2021-12-07
9.8
CVE-2021-44738
Buffer overflow vulnerability has been identified in Lexmark devices through 2021-12-07 in postscript interpreter
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CVE-2021-44737
PJL directory traversal vulnerability in Lexmark devices through 2021-12-07 that can be leveraged to overwrite internal configuration files
8.1
CVE-2022-29850
Various Lexmark products through 2022-04-27 allow an attacker who has already compromised an affected Lexmark device to maintain persistence across reboots