7.5

CVE-2021-20274: privoxy NULL Pointer Dereference

CVSS: 7.5v3.1HighModified
AliasesALPINE-CVE-2021-20274DEBIAN-CVE-2021-20274
Published 09-03-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-20274 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in privoxy. EPSS estimates a 1.92% chance of exploitation in the next 30 days, higher than 79.6% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.92%
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 3 · Related 3
OPENSUSE-SU-2021:0443-1OPENSUSE-SU-2021:0460-1OPENSUSE-SU-2024:11193-1

Timeline

  1. 09-03-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

A flaw was found in privoxy before 3.0.32. A crash may occur due a NULL-pointer dereference when the socks server misbehaves.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.92%

Chance of exploitation in the next 30 days

Percentile

80%

Versus all other CVEs

30-day change

0.00 pp

From 1.92% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.92%

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< 3.0.32-r0
Debian1 product
  • privoxy< 3.0.32-1
Privoxy1 product

3 vendors · 3 products

References

5 links