The bzexe command in bzip2 1.0.5 and earlier generates compressed executables that do not…
Priority LOW 23CWE-264Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-264.
Summary
The bzexe command in bzip2 1.0.5 and earlier generates compressed executables that do not properly handle temporary files during extraction, which allows local users to execute arbitrary code by precreating a temporary directory.
Why it matters now
EPSS 0.01045 64th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and 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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:bzip:bzip2:*:*:*:*:*:*:*:* | up to 1.0.4 | Vulnerable | Bzip |
| cpe:2.3:a:bzip:bzip2:1.0:*:*:*:*:*:*:* | 1.0 | Vulnerable | Bzip |
| cpe:2.3:a:bzip:bzip2:1.0.1:*:*:*:*:*:*:* | 1.0.1 | Vulnerable | Bzip |
| cpe:2.3:a:bzip:bzip2:1.0.2:*:*:*:*:*:*:* | 1.0.2 | Vulnerable | Bzip |
| cpe:2.3:a:bzip:bzip2:1.0.3:*:*:*:*:*:*:* | 1.0.3 | Vulnerable | Bzip |
- cpe:2.3:a:bzip:bzip2:*:*:*:*:*:*:*:* Versions up to 1.0.4 Vulnerable ·Bzip
- cpe:2.3:a:bzip:bzip2:1.0:*:*:*:*:*:*:* Versions 1.0 Vulnerable ·Bzip
- cpe:2.3:a:bzip:bzip2:1.0.1:*:*:*:*:*:*:* Versions 1.0.1 Vulnerable ·Bzip
- cpe:2.3:a:bzip:bzip2:1.0.2:*:*:*:*:*:*:* Versions 1.0.2 Vulnerable ·Bzip
- cpe:2.3:a:bzip:bzip2:1.0.3:*:*:*:*:*:*:* Versions 1.0.3 Vulnerable ·Bzip
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2011-4089
- 2026-10-03 Alias added: GHSA-f3fh-cjxj-26mw
References
More Bzip2 vulnerabilities
- TI-2019-09657 BZ2_decompress in decompress.c in bzip2 through 1.0.6 has an out-of-bounds write when there are many selectors. CVSS 3.1CRITICAL 9.8
- TI-2016-02675 Use-after-free vulnerability in bzip2recover in bzip2 1.0.6 allows remote attackers to… CVSS 3.1MEDIUM 6.5
- TI-2005-01190 bzip2 allows remote attackers to cause a denial of service (hard drive consumption) via a… CVSS 2.0MEDIUM 5.0
- TI-2010-00384 Integer overflow in the BZ2_decompress function in decompress.c in bzip2 and libbzip2… CVSS 2.0MEDIUM 5.1
- TI-2008-01321 bzlib.c in bzip2 before 1.0.5 allows user-assisted remote attackers to cause a denial of… CVSS 2.0MEDIUM 4.3
- TI-2002-00736 bzip2 before 1.0.2 in FreeBSD 4.5 and earlier, OpenLinux 3.1 and 3.1.1, and possibly… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2011-4089 · CVE Program
- CVE-2011-4089 · NVD
- FIRST EPSS
- GHSA-f3fh-cjxj-26mw · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences