7.8

CVE-2021-20217: privoxy Reachable Assertion

CVSS: 7.8v2.0HighModified
AliasesALPINE-CVE-2021-20217UBUNTU-CVE-2021-20217DEBIAN-CVE-2021-20217
Published 25-03-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-20217 is a high (CVSS 7.8) Reachable Assertion vulnerability in privoxy. EPSS estimates a 1.37% chance of exploitation in the next 30 days, higher than 71.4% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v2.0 (NVD)
EPSS score
1.37%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Related 4
DLA-2548-1MGASA-2021-0089OPENSUSE-SU-2021:0265-1OPENSUSE-SU-2021:0279-1OPENSUSE-SU-2024:11193-1USN-4886-1

Timeline

  1. 25-03-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

A flaw was found in Privoxy in versions before 3.0.31. An assertion failure triggered by a crafted CGI request may lead to denial of service. The highest threat from this vulnerability is to system availability.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

1.37%

Chance of exploitation in the next 30 days

Percentile

71%

Versus all other CVEs

30-day change

0.00 pp

From 1.37% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.37%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Alpine1 product
  • privoxy< 3.0.31-r0
Debian1 product
  • privoxy< 3.0.31-1
Privoxy1 product
Ubuntu1 product
  • privoxy< 3.0.21-7+deb8u1ubuntu0.1~esm1 | < 3.0.24-1ubuntu0.1 | < 3.0.26-5ubuntu0.1 | < 3.0.28-2ubuntu0.1

4 vendors · 4 products

References

9 links