CVE-2021-29005 json
Insecure permission of chmod command on rConfig server 3.9.6 exists.
published 2021-10-11 5 y ago modified 2026-07-09 4 mo ago also EUVD-2021-15651
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.2%
- EPSS 2.2% chance of exploitation in 30 days, percentile 82%
- public exploits
- 0
- none known
Summary
Insecure permission of chmod command on rConfig server 3.9.6 exists. After installing rConfig apache user may execute chmod as root without password which may let an attacker with low privilege to gain root access on server.
Exploit prediction
2.15% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/mrojz/rconfig-exploit/blob/main/CVE-2021-29005-POC.sh referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.0 | AV:N/AC:L/Au:S/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-276 Incorrect Default Permissions
References
-
github.com
/mrojz/rconfig-exploit/blob/main/CVE-2021-29005-POC.sh
exploit, third-party-advisory
Sources
- CVE List CVE-2021-29005
- NVD CVE-2021-29005
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