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Vulnerability record · CVE-2021-44734 · published 20 January 2022

CVE-2021-44734: Lexmark b2236 firmware code injection vulnerability

Lexmark · B2236 Firmware

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 3.1 Critical EPSS 6.4% · top 6.5% CWE-94 · Code injection
9.8CVSS 3.1 base score, v2 10.0
6.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
150Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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

Affected products

150 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-22-332/ Third Party AdvisoryVDB Entry
https://support.lexmark.com/alerts/ Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-22-332/ 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-2021-44735Lexmark b2236 firmware command injection vulnerabilityEmbedded web server command injection vulnerability in Lexmark devices through 2021-12-07.EPSS 7.0%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%8.8CVE-2026-65660Microsoft sharepoint server code injection vulnerabilityImproper control of generation of code ('code injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.KEVEPSS 2.1%9.8CVE-2026-60004Gitea diffpatch API code injection enables remote code executionGitea before 1.27.1 allows remote code execution through the diffpatch API by way of Git hook installation. The flaw is a code injection issue (CWE-9…KEVEPSS 24%analysed

Source: NIST National Vulnerability Database (record CVE-2021-44734), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.