Buffer overflow in the _chm_decompress_block function in CHM lib (chmlib) before 0.37, as…
Priority LOW 30Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Buffer overflow in the _chm_decompress_block function in CHM lib (chmlib) before 0.37, as used in products such as KchmViewer, allows attackers to execute arbitrary code, a different vulnerability than CVE-2005-2930.
Why it matters now
EPSS 0.03778 90th 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
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:jed_wing:chm_lib:0.1:*:*:*:*:*:*:* | 0.1 | Vulnerable | Jed Wing |
| cpe:2.3:a:jed_wing:chm_lib:0.2:*:*:*:*:*:*:* | 0.2 | Vulnerable | Jed Wing |
| cpe:2.3:a:jed_wing:chm_lib:0.3:*:*:*:*:*:*:* | 0.3 | Vulnerable | Jed Wing |
| cpe:2.3:a:jed_wing:chm_lib:0.31:*:*:*:*:*:*:* | 0.31 | Vulnerable | Jed Wing |
| cpe:2.3:a:jed_wing:chm_lib:0.32:*:*:*:*:*:*:* | 0.32 | Vulnerable | Jed Wing |
| cpe:2.3:a:jed_wing:chm_lib:0.33:*:*:*:*:*:*:* | 0.33 | Vulnerable | Jed Wing |
| cpe:2.3:a:jed_wing:chm_lib:0.35:*:*:*:*:*:*:* | 0.35 | Vulnerable | Jed Wing |
| cpe:2.3:a:jed_wing:chm_lib:0.36:*:*:*:*:*:*:* | 0.36 | Vulnerable | Jed Wing |
- cpe:2.3:a:jed_wing:chm_lib:0.1:*:*:*:*:*:*:* Versions 0.1 Vulnerable ·Jed Wing
- cpe:2.3:a:jed_wing:chm_lib:0.2:*:*:*:*:*:*:* Versions 0.2 Vulnerable ·Jed Wing
- cpe:2.3:a:jed_wing:chm_lib:0.3:*:*:*:*:*:*:* Versions 0.3 Vulnerable ·Jed Wing
- cpe:2.3:a:jed_wing:chm_lib:0.31:*:*:*:*:*:*:* Versions 0.31 Vulnerable ·Jed Wing
- cpe:2.3:a:jed_wing:chm_lib:0.32:*:*:*:*:*:*:* Versions 0.32 Vulnerable ·Jed Wing
- cpe:2.3:a:jed_wing:chm_lib:0.33:*:*:*:*:*:*:* Versions 0.33 Vulnerable ·Jed Wing
- cpe:2.3:a:jed_wing:chm_lib:0.35:*:*:*:*:*:*:* Versions 0.35 Vulnerable ·Jed Wing
- cpe:2.3:a:jed_wing:chm_lib:0.36:*:*:*:*:*:*:* Versions 0.36 Vulnerable ·Jed Wing
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2005-3318
- 2026-10-03 Alias added: GHSA-238q-w3p2-vw4m
- 2026-11-07 EPSS moved to the 90th–95th percentile
References
More Jed Wing Chm Lib vulnerabilities
- TI-2005-02523 Buffer overflow in the LZX decompression in CHM Lib (chmlib) 0.35, as used in products… CVSS 2.0HIGH 10.0
- TI-2005-02766 Stack-based buffer overflow in the _chm_find_in_PMGL function in chm_lib.c for chmlib… CVSS 2.0MEDIUM 5.1
- TI-2006-03078 Directory traversal vulnerability in extract_chmLib example program in CHM Lib (chmlib)… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2005-3318 · CVE Program
- CVE-2005-3318 · NVD
- FIRST EPSS
- GHSA-238q-w3p2-vw4m · GitHub Advisory Database · CC BY 4.0
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