CVE-2023-3436

Deadlock in Xpdf 4.04 due to PDF object stream references

LOW
3.3
CVSS Score
Published: June 27, 2023 at 08:55 PM UTC
Updated: June 17, 2026 at 06:14 AM UTC
2 products affected across 2 vendorsXpdfXpdf

Using Xpdf by Xpdf?

Get instant alerts when new vulnerabilities affect Xpdf - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
LOW3.3
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

Xpdf 4.04 will deadlock on a PDF object stream whose "Length" field is itself in another object stream.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.3LOWGandC
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-833CWE-667

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card