swftools wav2swf wav.c wav_convert2mono out-of-bounds
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
A vulnerability, which was classified as problematic, was found in swftools up to 0.9.2. This affects the function wav_convert2mono in the library lib/wav.c of the component wav2swf. The manipulation leads to out-of-bounds read. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used.
Why it matters now
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 |
|---|---|---|---|---|---|
| — | swftools | 0.9.0; 0.9.1; 0.9.2 | — | No fix listed | CNA |
- swftools Vendor— Affected 0.9.0; 0.9.1; 0.9.2 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-6271
- 2026-10-03 Alias added: GHSA-83f6-rpg2-3v27
References
More Swftools vulnerabilities
- TI-2022-18945 SWFTools commit 772e55a was discovered to contain a heap-use-after-free via the function grow_unicode at /lib/ttf.c. CVSS 3.1CRITICAL 9.8
- TI-2022-18944 SWFTools commit 772e55a was discovered to contain a heap-buffer overflow via the function readU8 at /lib/ttf.c. CVSS 3.1CRITICAL 9.8
- TI-2024-16610 A global-buffer-overflow vulnerability was found in SWFTools v0.9.2, in the function LineText at lib/swf5compiler.flex. CVSS 3.1HIGH 8.8
- TI-2024-18884 Null Pointer Dereference vulnerability in swfdump in swftools 0.9.2 allows attackers to… CVSS 3.1HIGH 7.5
- TI-2024-15195 swftools 0.9.2 was discovered to contain a heap-use-after-free vulnerability via the… CVSS 3.1HIGH 7.8
- TI-2024-15185 swftools 0.9.2 was discovered to contain a heap-use-after-free via the function… CVSS 3.1HIGH 7.8
Sources
- CVE-2025-6271 · CVE Program
- CVE-2025-6271 · NVD
- FIRST EPSS
- GHSA-83f6-rpg2-3v27 · GitHub Advisory Database · CC BY 4.0
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