How severe is CVE-2009-1862?

CVE-2009-1862 has a CVSS score of 7.8/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2009-1862?

Affected package information for CVE-2009-1862 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2009-1862?

No fixed version has been published for CVE-2009-1862 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2009-1862 actively exploited in the wild?

Yes. There are 2 known exploit references for CVE-2009-1862, including 2 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2009-1862?

CVE-2009-1862 has an EPSS (Exploit Prediction Scoring System) score of 58.6%, placing it in the 98th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2009-1862 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2009-1862 (Adobe Acrobat and Reader, Flash Player Unspecified Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2022-06-08. CISA required all US federal civilian agencies to remediate this vulnerability by 2022-06-22. The required action was: For Adobe Acrobat and Reader, apply updates per vendor instructions. For Adobe Flash Player, the impacted product is end-of-life and should be disconnected if still in use. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2009-1862?

CVE-2009-1862 is classified as Out-of-bounds Write (CWE-787). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Which products and versions are affected by CVE-2009-1862?

CVE-2009-1862 affects adobe acrobat; adobe acrobat reader; adobe flash player. Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2009-1862 published, and has it been updated?

CVE-2009-1862 was published on July 23, 2009 and was last updated on April 22, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2022-06-08 — agencies required to remediate by 2022-06-22

CVE-2009-1862

HIGH

Unspecified vulnerability in Adobe Reader and Acrobat 9.x through 9.1.2, and Adobe Flash Player 9.x through 9.0.159.0 and 10.x through 10.0.22.87, allows remote attackers to execute…

Published

Jul 23, 2009

Updated

Apr 22, 2026

Affected

0 pkgs

Patched

None yet

Exploits

2 known

EPSS Exploitation Probability

via FIRST.org ↗

58.6%probability of exploitation in next 30 days

High Risk98th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

Unspecified vulnerability in Adobe Reader and Acrobat 9.x through 9.1.2, and Adobe Flash Player 9.x through 9.0.159.0 and 10.x through 10.0.22.87, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via (1) a crafted Flash application in a .pdf file or (2) a crafted .swf file, related to authplay.dll, as exploited in the wild in July 2009.

Affected Products

3 products · 4 configurations

Application

acrobatadobe

≥ 9.0 && ≤ 9.1.2

range

Application

acrobat readeradobe

≥ 9.0 && ≤ 9.1.2

range

Application

flash playeradobe

≥ 10.0 && ≤ 10.0.22.87

range

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Unspecified vulnerability in Adobe Reader and Acrobat 9.x through 9.1.2,…

nvd.nist.govNVDSep 2009

Unspecified vulnerability in Adobe Reader and Acrobat 9.x through 9.1.2,…

cisa.govCISAJun 2022

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2009-1862 in your stack?

O3 detects CVE-2009-1862 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

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