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CVE-2002-0793 is a local link-following vulnerability in QNX RTOS 4.25 (QNX4). Multiple utilities improperly follow hard links and possibly symbolic links when operating on attacker-controlled file arguments, including the monitor utility with the -f option, dumper with the -d option, crttrap with the -c option, and a Watcom sample utility. Because these programs resolve and write to linked files without safely validating the final target, a local user can cause the privileged or trusted file operation to be redirected to an unintended file and overwrite arbitrary files on the 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 valid public exploits. Mallory filtered out 3 candidates as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Hard link and possibly symbolic link following vulnerabilities in an embedded operating system allowing arbitrary file overwrite.
A hard link and possible symlink-following vulnerability in an embedded operating system that allows arbitrary file overwrite.
A hard link and possible symlink-following vulnerability in an embedded operating system that allows arbitrary file overwrite.
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.