flexplm vulnerabilities and fixes

Recent CVEs affecting flexplm, with upgrade or downgrade steps. 1 tracked.

flexplm has 1 tracked vulnerability, 1 critical and 1 exploited in the wild (CISA KEV). A fixed release or vendor patch exists for 1. Most recent: 2026-06-18. Highest priority: CVE-2026-12569 (score 97/100).

• CVE-2026-12569 CRITICAL 9.8 EXPLOITED UPGRADE UPGRADE PTC Windchill and FlexPLM Improper Input Validation Vulnerability

FAQ

How do I fix flexplm 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 flexplm being exploited right now?

Yes: 1 flexplm CVE is on the CISA Known Exploited Vulnerabilities list, so patch it first.

Which flexplm CVE should I patch first?

CVE-2026-12569 currently ranks highest (97/100): PTC Windchill and FlexPLM Improper Input Validation Vulnerability.

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