A buffer overflow in SumatraPDF Reader v3.4.6 allows attackers to cause a Denial of…
Priority MEDIUM 58CWE-120Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.
Summary
A buffer overflow in SumatraPDF Reader v3.4.6 allows attackers to cause a Denial of Service (DoS) via a crafted text file.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00312 24th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:sumatrapdfreader:sumatrapdf:3.4.6:*:*:*:*:*:*:* | 3.4.6 | Vulnerable | sumatrapdfreader |
- cpe:2.3:a:sumatrapdfreader:sumatrapdf:3.4.6:*:*:*:*:*:*:* Versions 3.4.6 Vulnerable ·sumatrapdfreader
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-33802
- 2026-10-03 Alias added: GHSA-mhq9-63xw-5x49
References
More sumatrapdfreader Sumatrapdf vulnerabilities
- TI-2026-18936 SumatraPDF has an Untrusted Search Path in sumatrapdf/src/AppTools.cpp CVSS 3.1HIGH 8.6
- TI-2025-35489 A null pointer dereference vulnerability was discovered in SumatraPDF 3.5.2 during the… CVSS 3.1HIGH 7.3
- TI-2012-04514 SumatraPDF 2.1.1/MuPDF 1.0 allows remote attackers to cause an Integer Overflow in the… CVSS 3.1HIGH 7.8
- TI-2026-19293 SumatraPDF's Integer Underflow in PalmDbReader Leads to Crash CVSS 3.1MEDIUM 5.5
- TI-2009-01521 Heap-based buffer overflow in the loadexponentialfunc function in mupdf/pdf_function.c in… CVSS 3.1MEDIUM 5.4
- TI-2009-03906 Multiple stack-based buffer overflows in pdf_shade4.c in MuPDF before commit… CVSS 2.0HIGH 9.3
Sources
- CVE-2023-33802 · CVE Program
- CVE-2023-33802 · NVD
- FIRST EPSS
- GHSA-mhq9-63xw-5x49 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences