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Fencer Vulns
critical 9.8

CVE-2021-44734 json

Embedded web server input sanitization vulnerability in Lexmark devices through 2021-12-07, which can which can lead to remote code executi…

published 2022-01-20 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-31549

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.2%
EPSS 6.2% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

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.

Patch / fix

  • lexmark b2236_firmware mslsg.076.294
  • lexmark mb2236_firmware mxlsg.076.294
  • lexmark ms431_firmware mslbd.076.294
  • lexmark ms331_firmware mslbd.076.294
  • lexmark m1342_firmware mslbd.076.294
  • lexmark b3442_firmware mslbd.076.294
  • lexmark b3340_firmware mslbd.076.294
  • lexmark xm1342_firmware mslbd.076.294
  • lexmark mx331_firmware mxlbd.076.294
  • lexmark mx431_firmware mxlbd.076.294
  • lexmark mb3442_firmware mxlbd.076.294
  • lexmark ms321_firmware msngm.076.294
  • lexmark ms421_firmware msngm.076.294
  • lexmark ms521_firmware msngm.076.294
  • lexmark ms621_firmware msngm.076.294
  • lexmark m1242_firmware msngm.076.294
  • lexmark m1246_firmware msngm.076.294
  • lexmark b2338_firmware msngm.076.294
  • lexmark b2442_firmware msngm.076.294
  • lexmark b2546_firmware msngm.076.294

Exploit prediction

6.21% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.