qpopper POP server creates lock files with predictable names, which allows local users to cause a denial of service for other users (lack of mail access) by creating lock files for other mail boxes.
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Score 5.5 from GitHub Security Advisory (severity: LOW) published 2022-04-30. NVD baseline CVSS 5.5; sources differ by 0.0.
qpopper POP server creates lock files with predictable names, which allows local users to cause a denial of service for other users (lack of mail access) by creating lock files for other mail boxes.
August 31, 2001
April 16, 2026
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.
Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
Qualcomm qpopper 2.53/3.0 / RedHat imap 4.5 -4 / UoW imap 4.5 popd - Lock File Denial of Service
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