CVE-2026-91104: CWE-122 Heap-based buffer overflow in HP Inc. HP Linux Imaging and Printing Software (HPLIP)
HP has identified and remediated multiple externally reported vulnerabilities within HPLIP. The findings affect several software components that could potentially enable remote code execution, privilege escalation, denial of service, information disclosure, or unauthorized file modification under certain conditions.
AI Analysis
Technical Summary
HP Inc. identified a heap-based buffer overflow vulnerability (CWE-122) in HP Linux Imaging and Printing Software (HPLIP). The flaw affects multiple software components and could be exploited remotely without authentication, as indicated by the CVSS vector (AV:N/AC:L/PR:N/UI:N). The vulnerability has a high impact on confidentiality, integrity, and availability. HP has remediated these issues in version 3.26.6.
Potential Impact
Successful exploitation of this vulnerability could allow an unauthenticated remote attacker to execute arbitrary code, escalate privileges, cause denial of service, disclose sensitive information, or modify files without authorization. The CVSS 4.0 score of 9.3 reflects the critical severity and the broad impact on system security.
Mitigation Recommendations
HP has released an official fix in version 3.26.6 of HPLIP. Users and administrators should upgrade affected installations to version 3.26.6 or later to remediate this vulnerability. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-91104: CWE-122 Heap-based buffer overflow in HP Inc. HP Linux Imaging and Printing Software (HPLIP)
Description
HP has identified and remediated multiple externally reported vulnerabilities within HPLIP. The findings affect several software components that could potentially enable remote code execution, privilege escalation, denial of service, information disclosure, or unauthorized file modification under certain conditions.
CVSS v4.0
Score 9.3critical
Affected software
HP Inc.
HP Linux Imaging and Printing Software (HPLIP)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
HP Inc. identified a heap-based buffer overflow vulnerability (CWE-122) in HP Linux Imaging and Printing Software (HPLIP). The flaw affects multiple software components and could be exploited remotely without authentication, as indicated by the CVSS vector (AV:N/AC:L/PR:N/UI:N). The vulnerability has a high impact on confidentiality, integrity, and availability. HP has remediated these issues in version 3.26.6.
Potential Impact
Successful exploitation of this vulnerability could allow an unauthenticated remote attacker to execute arbitrary code, escalate privileges, cause denial of service, disclose sensitive information, or modify files without authorization. The CVSS 4.0 score of 9.3 reflects the critical severity and the broad impact on system security.
Mitigation Recommendations
HP has released an official fix in version 3.26.6 of HPLIP. Users and administrators should upgrade affected installations to version 3.26.6 or later to remediate this vulnerability. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- hp
- Date Reserved
- 2026-09-14T19:13:23.919Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aaae7b555bf5e2cf5087542
Added to database: 09/16/2026, 19:02:13 UTC
Last enriched: 09/16/2026, 19:17:47 UTC
Last updated: 09/17/2026, 02:03:08 UTC
Views: 7
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.