CVE-2026-91103: linux imaging and Integer Underflow

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.

Is your site exposed to CVE-2026-91103?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

9.8

CRITICAL

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

EPSS — Exploit Prediction

0.0097

Probability of exploitation

0.61%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-191 CWE-191

Affected Products

Vendor	Product	Versions
hp	linux_imaging_and_printing	< 3.26.6

References

Advisories & Patches

https://support.hp.com/us-en/document/ish_15646959-15646984-16/hpsbpi04151

Frequently Asked Questions

What is CVE-2026-91103? +

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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-91103? +

CVE-2026-91103 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0097, placing it in the 1th percentile for exploitation probability.

What products are affected by CVE-2026-91103? +

CVE-2026-91103 affects products from hp, specifically: linux_imaging_and_printing. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-91103? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-59368

An integer underflow vulnerability has been identified in Aicloud. An authenticated attacker may trigger this vulnerability by sending a crafted …

CVE-2025-65092

ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.1, 5.4.3, and 5.3.4, when the ESP32-P4 uses …

CVE-2026-43916

pam_authnft is a PAM session module binding nftables firewall rules to authenticated sessions via cgroupv2 inodes. Prior to 0.2.0-alpha, a …

CVE-2026-82459

Integer underflow (wrap or wraparound), Out-of-bounds write vulnerability in Apache Thrift C++ 32 bit THeaderTransport. This issue affects Apache Thrift: …

CVE-2024-36344

Insufficient parameter sanitization in AMD Secure Processor (ASP) TEE DrvSys could allow an attacker with local access to the Trusted …

CVE-2026-30803

Integer Underflow (Wrap or Wraparound) vulnerability in RTI Connext Micro (Core Libraries) allows Overread Buffers.This issue affects Connext Micro: from …