The II_step_one function in layer2.c in mpglib, as used in libmpgdecoder.a in LAME 3.99.5…
Priority LOW 32CWE-125Published · 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 3.0 · NVD. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.
Summary
The II_step_one function in layer2.c in mpglib, as used in libmpgdecoder.a in LAME 3.99.5 and other products, allows remote attackers to cause a denial of service (buffer over-read and application crash) via a crafted audio file.
Why it matters now
EPSS 0.04065 90th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
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
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:lame_project:lame:3.99.5:*:*:*:*:*:*:* | 3.99.5 | Vulnerable | Lame Project |
- cpe:2.3:a:lame_project:lame:3.99.5:*:*:*:*:*:*:* Versions 3.99.5 Vulnerable ·Lame Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2017-9869
- 2026-10-03 Alias added: GHSA-865p-f477-mwcx
References
More Lame Project Lame vulnerabilities
- TI-2017-08677 There is a division-by-zero vulnerability in LAME 3.99.5, caused by a malformed input file. CVSS 3.0CRITICAL 9.8
- TI-2017-07240 The III_dequantize_sample function in layer3.c in mpglib, as used in libmpgdecoder.a in… CVSS 3.0HIGH 7.8
- TI-2017-09988 NULL Pointer Dereference in the id3v2AddAudioDuration function in libmp3lame/id3tag.c in… CVSS 3.0HIGH 7.5
- TI-2017-07239 The III_i_stereo function in layer3.c in mpglib, as used in libmpgdecoder.a in LAME… CVSS 3.0HIGH 7.8
- TI-2017-05974 LAME through 3.99.5 relies on the signed integer data type for values in a WAV or AIFF… CVSS 3.0HIGH 7.8
- TI-2017-11024 LAME 3.99.5 has a NULL Pointer Dereference in the hip_decode_init function within… CVSS 3.0HIGH 7.8
Sources
- CVE-2017-9869 · CVE Program
- CVE-2017-9869 · NVD
- FIRST EPSS
- GHSA-865p-f477-mwcx · GitHub Advisory Database · CC BY 4.0
- CVE-2017-9869 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences