7.5

CVE-2021-35517: apache software foundation apache commons compress

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2021-35517DEBIAN-CVE-2021-35517CGA-28qx-9g9w-xqfc
Published 13-07-2021Last modified 08-10-2026

Vulnerability summary

CVE-2021-35517 is a high (CVSS 7.5) vulnerability in apache software foundation apache commons compress. EPSS estimates a 10.61% chance of exploitation in the next 30 days, higher than 95.7% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
10.61%
0%100%
Medium · 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

Timeline

  1. 13-07-2021
    PublishedVulnerability first disclosed.
  2. 08-10-2026
    Last modifiedVulnerability information updated.

Description

When reading a specially crafted TAR archive, Compress can be made to allocate large amounts of memory that finally leads to an out of memory error even for very small inputs. This could be used to mount a denial of service attack against services that use Compress' tar package.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

10.61%

Chance of exploitation in the next 30 days

Percentile

96%

Versus all other CVEs

30-day change

0.00 pp

From 10.61% on 18-09-2026

18-09-202618-10-2026
EPSS score
10.61%

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

Chainguard67 products
  • eco-java-gradle-4.10All versions (No fix recorded)
  • eco-java-gradle-4.10.1All versions (No fix recorded)
  • eco-java-gradle-4.10.2All versions (No fix recorded)
  • eco-java-gradle-4.10.3All versions (No fix recorded)
  • eco-java-gradle-4.2All versions (No fix recorded)
Oracle24 products
Netapp2 products
Apache1 product
Apache software foundation1 product
Debian1 product
  • libcommons-compress-java< 1.21-1
Org.apache.commons1 product
  • commons-compress< 1.21
Ubuntu1 product
  • libcommons-compress-javaAll versions (No fix recorded)

8 vendors · 98 products

References

41 links
Show all 41 references