CVE-2021-30463 json
VestaCP through 0.9.8-24 allows attackers to gain privileges by creating symlinks to files for which they lack permissions.
published 2021-04-08 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-17388
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 42%
- public exploits
- 0
- none known
Summary
VestaCP through 0.9.8-24 allows attackers to gain privileges by creating symlinks to files for which they lack permissions. After reading the RKEY value from user.conf under the /usr/local/vesta/data/users/admin directory, the admin password can be changed via a /reset/?action=confirm&user=admin&code= URI. This occurs because chmod is used unsafely.
Exploit prediction
0.50% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- ssd-disclosure.com https://ssd-disclosure.com/ssd-advisory-vestacp-lpe-vulnerabilities/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-59 Improper Link Resolution Before File Access
References
-
ssd-disclosure.com
/ssd-advisory-vestacp-lpe-vulnerabilities/
exploit, third-party-advisory
Sources
- CVE List CVE-2021-30463
- NVD CVE-2021-30463
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