Out-of-bounds write in bsdiff
Priority MEDIUM 47CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
A memory corruption vulnerability is present in bspatch as shipped in Colin Percival’s bsdiff tools version 4.3. Insufficient checks when handling external inputs allows an attacker to bypass the sanity checks in place and write out of a dynamically allocated buffer boundaries.
Why it matters now
EPSS 0.02603 85th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
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 |
|---|---|---|---|---|---|
| — | bsdiff | bsdiff 4.3 | — | No fix listed | CNA |
- bsdiff Vendor— Affected bsdiff 4.3 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:daemonology:bsdiff:4.3:*:*:*:*:*:*:* | 4.3 | Vulnerable | Daemonology |
- cpe:2.3:a:daemonology:bsdiff:4.3:*:*:*:*:*:*:* Versions 4.3 Vulnerable ·Daemonology
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2020-14315
- 2026-10-03 Alias added: GHSA-g2hg-j8m2-ppxr
References
Sources
- CVE-2020-14315 · CVE Program
- CVE-2020-14315 · NVD
- FIRST EPSS
- GHSA-g2hg-j8m2-ppxr · GitHub Advisory Database · CC BY 4.0
- CVE-2020-14315 · 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