CVE-2021-20214
Memory leaks in the client-tags CGI handler when client tags are configured and memory allocations fail can lead to a system crash.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.02%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A flaw was found in Privoxy in versions before 3.0.29. Memory leaks in the client-tags CGI handler when client tags are configured and memory allocations fail can lead to a system crash.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.02% probability · 81th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-401
- Affected
- privoxy/privoxy
- Source
- secalert@redhat.com
EPSS 2.0% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1928742Issue Tracking, Patch, Third Party Advisory
- https://security.gentoo.org/glsa/202107-16Third Party Advisory
- https://www.privoxy.org/3.0.29/user-manual/whatsnew.htmlRelease Notes, Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1928742Issue Tracking, Patch, Third Party Advisory
- https://security.gentoo.org/glsa/202107-16Third Party Advisory
- https://www.privoxy.org/3.0.29/user-manual/whatsnew.htmlRelease Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.