CVE-2021-20211: privoxy
CVSS: 7.8v2.0HighModified
AliasesALPINE-CVE-2021-20211UBUNTU-CVE-2021-20211DEBIAN-CVE-2021-20211
Published 25-03-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-20211 is a high (CVSS 7.8) vulnerability in privoxy. EPSS estimates a 2.15% chance of exploitation in the next 30 days, higher than 81.8% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v2.0 (NVD)EPSS score
2.15%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 2 · Related 1Timeline
- 25-03-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
A flaw was found in Privoxy in versions before 3.0.29. Memory leak when client tags are active can cause a system crash.
CVSS metrics
5 scores · 4 sources · 2 versionsHigh 7.5Preferred score · OSV · Alpine (Ecosystem advisory) · calculated from vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
High 7.8Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:CSourcesSingle source
EPSS trend
Probability
2.15%
Chance of exploitation in the next 30 days
Percentile
82%
Versus all other CVEs
30-day change
0.00 pp
From 2.15% on 19-09-2026
19-09-202619-10-2026
EPSS score2.15%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Alpine1 product
- privoxy< 3.0.29-r0
Debian1 product
- privoxy< 3.0.29-1
Privoxy1 product
- privoxy< 3.0.29
Ubuntu1 product
- privoxy< 3.0.26-5ubuntu0.1 | < 3.0.28-2ubuntu0.1
4 vendors · 4 products
