CVE-2009-1862: Adobe Acrobat and Reader, Flash Player Unspecified Vulnerability
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Adobe Acrobat and Reader and Adobe Flash Player allows remote attackers to execute code or cause denial-of-service (DoS).
CSIRTS triage
- What
- An unspecified vulnerability allows remote attackers to execute code or cause denial-of-service.
- Who is affected
- Users of Adobe Acrobat, Reader, and Flash Player are affected.
- Urgency
- Remediation is critical due to the potential for exploitation and the severity of the vulnerabilities.
- Action
- Update to the latest version of Adobe Acrobat, Reader, and Flash Player.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch Acrobat and Reader, Flash Player
Get an email when a new Acrobat and Reader, Flash Player advisory drops — max one per day, one-click unsubscribe.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2009-1862
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Exploitation confirmedCVE-2009-1862Already exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 98% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2009-1862 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Adobe Acrobat and
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- unknownSecurity Alert: Alert Regarding Vulnerabilities in Adobe Acrobat and Reader (APSB26-63)jpcert · 2026-06-10
- criticalexploitedCVE-2009-3459: Adobe Acrobat and Reader Heap-Based Buffer Overflow Vulnerabilitycisa-kev · 2026-05-20
- unknownSecurity Alert: Alert Regarding Vulnerabilities in Adobe Acrobat and Reader (APSB26-44)jpcert · 2026-04-15
- criticalexploitedCVE-2020-9715: Adobe Acrobat Use-After-Free Vulnerabilitycisa-kev · 2026-04-13
- criticalexploitedCVE-2026-34621: Adobe Acrobat and Reader Prototype Pollution Vulnerabilitycisa-kev · 2026-04-13
- criticalexploitedCVE-2023-21608: Adobe Acrobat and Reader Use-After-Free Vulnerabilitycisa-kev · 2023-10-10
More from CISA Known Exploited Vulnerabilities
- criticalCVE-2026-48939: iCagenda Unrestricted Upload of File with Dangerous Type Vulnerability2026-07-10
- criticalCVE-2026-56291: Balbooa Forms Unrestricted Upload of File with Dangerous Type Vulnerability2026-07-10
- criticalCVE-2026-48908: JoomShaper SP Page Builder Unrestricted Upload of File with Dangerous Type Vulnerability2026-07-07
- criticalCVE-2026-55255: Langflow Authorization Bypass Through User-Controlled Key Vulnerability2026-07-07
- criticalCVE-2026-48282: Adobe ColdFusion Path Traversal Vulnerability2026-07-07