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Vulnerability record · CVE-2021-44738 · published 20 January 2022

CVE-2021-44738: Lexmark b2236 firmware classic buffer overflow vulnerability

Lexmark · B2236 Firmware

Buffer overflow vulnerability has been identified in Lexmark devices through 2021-12-07 in postscript interpreter.

9.8 CVSS 3.1 Critical EPSS 3.3% · top 11.9% CWE-120 · Classic buffer overflow
9.8CVSS 3.1 base score, v2 10.0
3.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
150Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

Buffer overflow vulnerability has been identified in Lexmark devices through 2021-12-07 in postscript interpreter.

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-22-327/ Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-328/ Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-382/ Third Party AdvisoryVDB Entry
https://support.lexmark.com/alerts/ Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-22-327/ Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-328/ Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-382/ 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-2021-44735Lexmark b2236 firmware command injection vulnerabilityEmbedded web server command injection vulnerability in Lexmark devices through 2021-12-07.EPSS 7.0%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%5.5CVE-2025-43520Apple OS kernel memory corruption via malicious appA memory corruption flaw (classic buffer overflow) in Apple's kernel was fixed across iOS, iPadOS, macOS, tvOS, visionOS and watchOS. A malicious app…KEVEPSS 0.43%analysed8.8CVE-2025-31277Apple WebKit memory corruption via malicious web contentApple WebKit fails to handle memory correctly when processing crafted web content, leading to memory corruption across Safari, iOS, iPadOS, macOS, tv…KEVEPSS 1.6%analysed

Source: NIST National Vulnerability Database (record CVE-2021-44738), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.