CVE-2023-26266
In AFL++ 4.05c, the CmpLog component uses the current working directory to resolve and execute...
In AFL++ 4.05c, the CmpLog component uses the current working directory to resolve and execute unprefixed fuzzing targets, allowing code execution.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
In AFL++ 4.05c, the CmpLog component uses the current working directory to resolve and execute unprefixed fuzzing targets, allowing code execution.
- Record
CVE-2023-26266- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-427
- Updated
- 2026-11-02
CVE List
In AFL++ 4.05c, the CmpLog component uses the current working directory to resolve and execute unprefixed fuzzing targets, allowing code execution.
- Record
CVE-2023-26266- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-427
- Updated
- 2026-11-02
EUVDEUVD-2023-30090
In AFL++ 4.05c, the CmpLog component uses the current working directory to resolve and execute unprefixed fuzzing targets, allowing code execution.
- Record
EUVD-2023-30090- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-62wp-583h-jvfj
In AFL++ 4.05c, the CmpLog component uses the current working directory to resolve and execute...
In AFL++ 4.05c, the CmpLog component uses the current working directory to resolve and execute unprefixed fuzzing targets, allowing code execution.
- Record
GHSA-62wp-583h-jvfj- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSV
In AFL++ 4.05c, the CmpLog component uses the current working directory to resolve and execute unprefixed fuzzing targets, allowing code execution.
- Record
CVE-2023-26266- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2023-26266
In AFL++ 4.05c, the CmpLog component uses the current working directory to resolve and execute unprefixed fuzzing targets, allowing code execution.
- Record
DEBIAN-CVE-2023-26266- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2023-26266
In AFL++ 4.05c, the CmpLog component uses the current working directory to resolve and execute unprefixed fuzzing targets, allowing code execution.
- Record
UBUNTU-CVE-2023-26266- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
aflplusplusDebian:12 | before 4.04c-4 | 4.04c-4 |
aflplusplusDebian:13 | before 4.04c-4 | 4.04c-4 |
aflplusplusDebian:14 | before 4.04c-4 | 4.04c-4 |
aflplusplusUbuntu:20.04:LTS | All versions, plus listed versions 2.53c-12.60c-12.60c-1build12.60c-1build2 | None known |
aflplusplusUbuntu:22.04:LTS | All versions, plus listed versions 2.68c-1build13.14c-2ubuntu14.00c-1ubuntu1 | None known |
aflplusplusUbuntu:24.04:LTS | All versions, plus listed versions 4.08c-1ubuntu24.08c-1ubuntu34.09c-1ubuntu14.09c-1ubuntu24.09c-1ubuntu3 | None known |
aflplusplusUbuntu:25.10 | All versions, plus listed versions 4.21c-4ubuntu2 | None known |
aflplusplusUbuntu:26.10 | All versions, plus listed versions 4.33c-1.1ubuntu1 | None known |
aflplusplusUbuntu:26.04:LTS | All versions, plus listed versions 4.21c-4ubuntu24.33c-1.1ubuntu1 | None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-26266 is a high vulnerability (CVSS 7.3) in Afl\+\+ Project Afl\+\+, published February 21, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.40%, the 35th percentile. Fixed in aflplusplus 4.04c-4.
References
github.com/AFLplusplus/AFLplusplus/pull/1643
nvd.nist.gov/vuln/detail/CVE-2023-26266
security-tracker.debian.org/tracker/CVE-2023-26266
ubuntu.com/security/CVE-2023-26266
cve.org/CVERecord?id=CVE-2023-26266