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CVE-2026-8632 is a high-severity vulnerability in HP Linux Imaging and Printing Software (HPLIP) affecting versions earlier than 3.26.4. The flaw is caused by improper neutralization of special characters in user-supplied data, resulting in an operating system command injection condition in the print request handling path. A local attacker with low privileges can trigger the issue by submitting a specially crafted print request, which may lead to privilege escalation and arbitrary command execution on the underlying host operating system.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
15 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A related heap corruption flaw in the same HPLIP hpcups path, mentioned only in passing as part of vendor advisories.
A high-severity local privilege escalation vulnerability in HPLIP involving input validation failures in operating system script wrappers, enabling command injection or buffer overflow conditions to execute arbitrary commands as root.
High-severity vulnerability in HP Linux Imaging and Printing Software caused by improper neutralization of special characters in user-supplied data, allowing a low-privileged local attacker to escalate privileges and execute arbitrary OS commands.
A vulnerability in HP Linux Imaging and Printing Software that may allow privilege escalation and/or arbitrary code execution through operating system command injection.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.