Adobe Acrobat Use-After-Free Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2026-04-13
• EPSS: 33% chance of exploitation in the next 30 days (higher than 98% of CVEs)

[ Description ]Official description

Adobe Acrobat and Reader versions 2020.009.20074 and earlier, 2020.001.30002, 2017.011.30171 and earlier, and 2015.006.30523 and earlier have an use-after-free vulnerability. Successful exploitation could lead to arbitrary code execution .

CISA: Adobe Acrobat contains a use-after-free vulnerability that allows for code execution

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 27 Apr 2026): Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

• Patch on blog.exodusintel.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ References ]References

• blog.exodusintel.com/2021/04/20/analysis-of-a-use-after-free-vulnerability-in-adobe-acr…ExploitPatchThird Party Advisory
• helpx.adobe.com/security/products/acrobat/apsb20-48.htmlVendor Advisory
• www.zerodayinitiative.com/advisories/ZDI-20-991Third Party AdvisoryVDB Entry
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource