What is CVE-2009-1855?

CVE-2009-1855 is a vulnerability in Adobe Acrobat, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2009-06-11.

Is CVE-2009-1855 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Adobe Acrobat

CVE-2009-1855

Stack-based buffer 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 might allow attackers to execute arbitrary code via a PDF file containing a malformed U3D model file with a crafted extension block.

Vulnerability class: Buffer Overflow

Published 2009-06-11 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 9.3 (High). Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.124 (96.1th percentile), scored 2026-10-02.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.124 · newest: 0.124 · change: 0.000

Affected products

Adobe Acrobat — versions 7.0, 7.0.1, 7.0.2
Adobe Acrobat Reader — versions 7.0, 7.0.1, 7.0.2

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

References

www.securityfocus.com/bid/35274 (Patch, vdb-entry)
www.securityfocus.com/archive/1/504229/100/0/threaded (mailing-list)
www.vupen.com/english/advisories/2009/1547 (Patch, vdb-entry, Vendor Advisory)
secunia.com/advisories/35655 (Vendor Advisory, third-party-advisory)
www.us-cert.gov/cas/techalerts/TA09-161A.html (US Government Resource, third-party-advisory)
secunia.com/advisories/35734 (Vendor Advisory, third-party-advisory)
www.redhat.com/support/errata/RHSA-2009-1109.html (vendor-advisory)
www.adobe.com/support/security/bulletins/apsb09-07.html (Patch, Vendor Advisory)
lists.opensuse.org/opensuse-security-announce/2009-07/msg00000.html (vendor-advisory)
securitytracker.com/id (vdb-entry)

Frequently asked questions

What is CVE-2009-1855?: CVE-2009-1855 is a vulnerability in Adobe Acrobat, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2009-06-11.
Is CVE-2009-1855 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.