upx vulnerabilities and fixes

Recent CVEs affecting upx, with upgrade or downgrade steps. 2 tracked.

upx has 2 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 2. Most recent: 2025-03-27. Highest priority: CVE-2024-3209 (score 41/100).

• CVE-2025-2849 LOW 3.3 UPGRADE A vulnerability, which was classified as problematic, was found in UPX up to 5.0.0
• CVE-2024-3209 MEDIUM 5.5 UPGRADE MITIGATE A vulnerability was found in UPX up to 4.2.2

FAQ

How do I fix upx vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is upx being exploited right now?

None of the tracked upx CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which upx CVE should I patch first?

CVE-2024-3209 currently ranks highest (41/100): A vulnerability was found in UPX up to 4.2.2.

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