CVE-2021-20271A flaw was found in RPM's signature check functionality when reading a package file. This flaw allows an attacker who can convince a…
- 7.0HighCVSS base score
- 0.77%Exploitation in 30 daysEPSS · top 44% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A flaw was found in RPM's signature check functionality when reading a package file. This flaw allows an attacker who can convince a victim to install a seemingly verifiable package, whose signature header was modified, to cause RPM database corruption and execute code. The highest threat from this vulnerability is to data integrity, confidentiality, and system availability.
Timeline
ID reserved
By redhat
- 3 months later
· 3 months later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.0 | CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.77% · top 44% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.0.
Affected products
rpm
- affected all versions
References
References7
- https://bugzilla.redhat.com/show_bug.cgi?id=1934125 (opens in a new tab)x_transferred
- https://github.com/rpm-software-management/rpm/commit/d6a86b5e69e46cc283b1e06c92343319beb42e21 (opens in a new tab)x_transferred
- FEDORA-2021-2383d950fd (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2021-8d52a8a999 (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2021-662680e477 (opens in a new tab)vendor-advisoryx_transferred
- GLSA-202107-43 (opens in a new tab)vendor-advisoryx_transferred
- https://www.starwindsoftware.com/security/sw-20220805-0002/ (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2021-7705 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2021-20271)Record last updated .