What’s Vulnerable › Vulnerabilities

CVE-2009-1856

• Severity: critical (CVSS 9.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 13.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2009-06-11 · updated 2026-06-16
• Weakness: CWE-189

Description

Integer overflow in Adobe Reader 7 and Acrobat 7 before 7.1.3, Adobe Reader 8 and Acrobat 8 before 8.1.6, and Adobe Reader 9 and Acrobat 9 before 9.1.2 allows attackers to cause a denial of service or possibly execute arbitrary code via a PDF file containing unspecified parameters to the FlateDecode filter, which triggers a heap-based buffer overflow.

Affected products

• Adobe Acrobat for Edge: 7.0, 7.0.1, 7.0.2, 7.0.3, 7.0.4, 7.0.5 (+18)
• Adobe Acrobat Reader: 7.0, 7.0.1, 7.0.2, 7.0.3, 7.0.4, 7.0.5 (+17)

References

• http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=807
• http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00000.html
• http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html
• http://secunia.com/advisories/34580
• http://secunia.com/advisories/35496
• http://secunia.com/advisories/35655
• http://secunia.com/advisories/35685
• http://secunia.com/advisories/35734
• http://security.gentoo.org/glsa/glsa-200907-06.xml
• http://securitytracker.com/id?1022361
• http://www.adobe.com/support/security/bulletins/apsb09-07.html
• http://www.redhat.com/support/errata/RHSA-2009-1109.html

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