CVE-2009-0756
NVD-CWE-OtherPublished: March 3, 2009· Updated: Jun 16, 2026
Official Description
The JBIG2Stream::readSymbolDictSeg function in Poppler before 0.10.4 allows remote attackers to cause a denial of service (crash) via a PDF file that triggers a parsing error, which is not properly handled by JBIG2SymbolDict::~JBIG2SymbolDict and triggers an invalid memory dereference.
Technical Analysis
CVE-2009-0756 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A proof-of-concept (PoC) exploit exists for CVE-2009-0756. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (20)
Quick Facts
Related CVEs (NVD-CWE-Other)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2009-0756 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts