GNU cflow through 1.6 has a heap-based buffer over-read in the nexttoken function in parser.c.
Priority LOW 31CWE-125Published · Updated
Key facts
- Attack vector
- Network
- 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-125 and the CVSS impact.
Summary
GNU cflow through 1.6 has a heap-based buffer over-read in the nexttoken function in parser.c.
Why it matters now
EPSS 0.01113 66th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
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
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2019-16166
- 2026-10-03 Alias added: GHSA-5g5w-m23x-cv77
References
More GNU Cflow vulnerabilities
- TI-2023-02612 GNU cflow parser.c parse_variable_declaration denial of service CVSS 3.1HIGH 7.5
- TI-2019-12151 GNU cflow through 1.6 has a use-after-free in the reference function in parser.c. CVSS 3.1MEDIUM 6.5
- TI-2020-14693 Use-after-Free vulnerability in cflow 1.6 in the void call(char *name, int line) function… CVSS 3.1MEDIUM 5.5
Sources
- CVE-2019-16166 · CVE Program
- CVE-2019-16166 · NVD
- FIRST EPSS
- GHSA-5g5w-m23x-cv77 · GitHub Advisory Database · CC BY 4.0
- CVE-2019-16166 · Red Hat security data · CC BY 4.0
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