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Vulnerability record · CVE-2021-44735 · published 20 January 2022

CVE-2021-44735: Lexmark b2236 firmware command injection vulnerability

Lexmark · B2236 Firmware

Embedded web server command injection vulnerability in Lexmark devices through 2021-12-07.

9.8 CVSS 3.1 Critical EPSS 7.0% · top 6.0% CWE-77 · Command injection
9.8CVSS 3.1 base score, v2 10.0
7.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
118Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

Embedded web server command injection vulnerability in Lexmark devices through 2021-12-07.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

118 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://support.lexmark.com/alerts/ Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-22-326/ Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-329/ Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-330/ Third Party AdvisoryVDB Entry
https://support.lexmark.com/alerts/ Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-22-326/ Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-329/ Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-330/ Third Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-23560Lexmark b2236 firmware server-side request forgery (ssrf) vulnerabilityIn certain Lexmark products through 2023-01-12, SSRF can occur because of a lack of input validation.EPSS 14%9.8CVE-2021-44734Lexmark b2236 firmware code injection vulnerabilityEmbedded web server input sanitization vulnerability in Lexmark devices through 2021-12-07, which can which can lead to remote code execution on the …EPSS 6.4%9.8CVE-2021-44738Lexmark b2236 firmware classic buffer overflow vulnerabilityBuffer overflow vulnerability has been identified in Lexmark devices through 2021-12-07 in postscript interpreter.EPSS 3.3%8.8CVE-2021-44737Lexmark b2236 firmware path traversal vulnerabilityPJL directory traversal vulnerability in Lexmark devices through 2021-12-07 that can be leveraged to overwrite internal configuration files.EPSS 1.4%8.1CVE-2022-29850Lexmark b2236 firmware improper input validation vulnerabilityVarious Lexmark products through 2022-04-27 allow an attacker who has already compromised an affected Lexmark device to maintain persistence across r…EPSS 1.0%7.5CVE-2023-22960Lexmark b2236 firmware improper restriction of authentication attempts vulnerabilityLexmark products through 2023-01-10 have Improper Control of Interaction Frequency.EPSS 28%9.8CVE-2026-8037Progress LoadMaster API OS Command Injection RCEProgress LoadMaster (and related ADC products) contain an OS command injection flaw in multiple API command endpoints where unsanitized input is pass…KEVEPSS 77%analysed8.7CVE-2026-42271LiteLLM MCP test endpoints allow authenticated OS command injectionLiteLLM versions 1.74.2 through before 1.83.7 expose two MCP preview endpoints (POST /mcp-rest/test/connection and POST /mcp-rest/test/tools/list) th…KEVEPSS 13%analysed

Source: NIST National Vulnerability Database (record CVE-2021-44735), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.