xlnt-community xlnt XLSX File xlsx_consumer.cpp read_office_document null pointer dereference
Priority LOW 22CWE-404Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-404.
Summary
A vulnerability was identified in xlnt-community xlnt up to 1.6.1. The affected element is the function xlnt::detail::xlsx_consumer::read_office_document of the file source/detail/serialization/xlsx_consumer.cpp of the component XLSX File Parser. The manipulation leads to null pointer dereference. The attack must be carried out locally. The exploit is publicly available and might be used.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00233 14th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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 |
|---|---|---|---|---|---|
| xlnt-community | xlnt | 1.6.0; 1.6.1 | — | No fix listed | CNA |
- xlnt Vendorxlnt-community Affected 1.6.0; 1.6.1 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:xlnt-community:xlnt:*:*:*:*:*:*:*:* | up to 1.6.1 | Vulnerable | xlnt-community |
- cpe:2.3:a:xlnt-community:xlnt:*:*:*:*:*:*:*:* Versions up to 1.6.1 Vulnerable ·xlnt-community
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-3665
- 2026-10-03 Alias added: GHSA-f8w4-fphr-9q3w
References
More xlnt-community Xlnt vulnerabilities
- TI-2026-02983 xlnt-community xlnt Compound Document binary.hpp append heap-based overflow CVSS 4.0MEDIUM 4.8
- TI-2026-02313 xlnt-community xlnt Encrypted XLSX File base64.cpp decode_base64 off-by-one CVSS 4.0MEDIUM 4.8
- TI-2026-03159 xlnt-community xlnt Encrypted XLSX File compound_document.cpp read_directory out-of-bounds CVSS 4.0MEDIUM 4.8
- TI-2026-03158 xlnt-community xlnt XLSX File compound_document.cpp xsgetn out-of-bounds CVSS 4.0MEDIUM 4.8
Sources
- CVE-2026-3665 · CVE Program
- CVE-2026-3665 · NVD
- FIRST EPSS
- GHSA-f8w4-fphr-9q3w · 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