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Vulnerability record · CVE-2022-29850 · published 26 August 2022

CVE-2022-29850: Lexmark b2236 firmware improper input validation vulnerability

Lexmark · B2236 Firmware

Various Lexmark products through 2022-04-27 allow an attacker who has already compromised an affected Lexmark device to maintain persistence across reboots.

8.1 CVSS 3.1 High EPSS 1.0% · top 38.1% CWE-20 · Improper input validationCWE-668 · Exposure of resource to wrong sphere
8.1CVSS 3.1 base score
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
117Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

Various Lexmark products through 2022-04-27 allow an attacker who has already compromised an affected Lexmark device to maintain persistence across reboots.

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

Affected products

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

References

LinkTags
https://publications.lexmark.com/publications/security-alerts/CVE-2022-29850.pdf Vendor Advisory
https://support.lexmark.com/alerts/ Vendor Advisory
https://www.lexmark.com/en_us/solutions/security/lexmark-security-advisories.html Vendor Advisory
https://publications.lexmark.com/publications/security-alerts/CVE-2022-29850.pdf Vendor Advisory
https://support.lexmark.com/alerts/ Vendor Advisory
https://www.lexmark.com/en_us/solutions/security/lexmark-security-advisories.html Vendor Advisory

Track CVE-2022-29850 inside VULONE

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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%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%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%9.5CVE-2026-88771Citrix NetScaler Improper Input Validation VulnerabilityImproper input validation vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-…KEV9.5CVE-2026-93952Arista velocloud orchestrator improper input validation vulnerabilityVeloCloud Orchestrator (VCO) on-prem has a security issue where this issue may allow a remote attacker to access privileged internal functionality an…KEVEPSS 1.1%

Source: NIST National Vulnerability Database (record CVE-2022-29850), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.