7.5

CVE-2025-8194: python software foundation cpython Infinite Loop

CVSS: 7.5v3.1HighDeferred
AliasesSUSE-SU-2025:02701-1SUSE-SU-2025:02787-1SUSE-SU-2025:02982-1
Published 28-07-2025Last modified 31-07-2026

Vulnerability summary

CVE-2025-8194 is a high (CVSS 7.5) Infinite Loop vulnerability in python software foundation cpython. EPSS estimates a 0.71% chance of exploitation in the next 30 days, higher than 52.6% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.71%
0%100%
Low · +0.07 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 13 · Related 11

Timeline

  1. 28-07-2025
    PublishedVulnerability first disclosed.
  2. 31-07-2026
    Last modifiedVulnerability information updated.

Description

There is a defect in the CPython “tarfile” module affecting the “TarFile” extraction and entry enumeration APIs. The tar implementation would process tar archives with negative offsets without error, resulting in an infinite loop and deadlock during the parsing of maliciously crafted tar archives. This vulnerability can be mitigated by including the following patch after importing the “tarfile” module:  https://gist.github.com/sethmlarson/1716ac5b82b73dbcbf23ad2eff8b33e1

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.71%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

+0.07 pp

From 0.64% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.71%

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

Redhat109 products
  • mod_wsgi< 0:4.7.1-5.module+el8.7.0+16654+645aad7f | < 0:4.7.1-4.module+el8.4.0+9822+20bf1249
  • numpy< 0:1.19.4-2.module+el8.4.0+15042+dc5a279b.1 | < 0:1.19.4-3.module+el8.5.0+12204+54860423
  • numpy-debugsource< 0:1.19.4-2.module+el8.4.0+15042+dc5a279b.1 | < 0:1.19.4-3.module+el8.5.0+12204+54860423
  • platform-python< 0:3.6.8-71.el8_10 | < 0:3.6.8-47.el8_6.9 | < 0:3.6.8-39.el8_4.7 | < 0:3.6.8-51.el8_8.11 | < 0:3.6.8-24.el8_2.4
  • platform-python-debug< 0:3.6.8-71.el8_10 | < 0:3.6.8-47.el8_6.9 | < 0:3.6.8-39.el8_4.7 | < 0:3.6.8-51.el8_8.11 | < 0:3.6.8-24.el8_2.4
Suse19 products
  • python-base&distro=SUSE Linux Enterprise Module for Package Hub 15 SP6< 2.7.18-150000.83.1
  • python-base&distro=SUSE Linux Enterprise Module for Package Hub 15 SP7< 2.7.18-150000.83.1
  • python-base&distro=SUSE Linux Enterprise Server LTSS Extended Security 12 SP5< 2.7.18-33.53.1
  • python-doc&distro=SUSE Linux Enterprise Server LTSS Extended Security 12 SP5< 2.7.18-33.53.1
  • python3-core&distro=SUSE Linux Enterprise Micro 5.1< 3.6.15-150000.3.185.1
Opensuse18 products
  • python-base&distro=openSUSE Leap 15.6< 2.7.18-150000.83.1
  • python-doc&distro=openSUSE Leap 15.6< 2.7.18-150000.83.1
  • python310-core&distro=openSUSE Leap 15.6< 3.10.18-150400.4.88.1
  • python310-documentation&distro=openSUSE Leap 15.6< 3.10.18-150400.4.88.1
  • python310&distro=openSUSE Leap 15.6< 3.10.18-150400.4.88.1
Ubuntu11 products
  • python2.7< 2.7.6-8ubuntu0.6+esm26 | < 2.7.12-1ubuntu0~16.04.18+esm17 | < 2.7.17-1~18.04ubuntu1.13+esm12 | < 2.7.18-1~20.04.7+esm8 | < 2.7.18-13ubuntu1.5+esm7
  • python3.10< 3.10.12-1~22.04.11
  • python3.11< 3.11.0~rc1-1~22.04.1~esm5
  • python3.12< 3.12.3-1ubuntu0.8
  • python3.13< 3.13.6-1
Chainguard5 products
  • python-3.10< 3.10.19-r0
  • python-3.11< 3.11.13-r4
  • python-3.12< 3.12.11-r6
  • python-3.13< 3.13.6-r0
  • python-3.9< 3.9.25-r0
Wolfi4 products
  • python-3.10< 3.10.19-r0
  • python-3.11< 3.11.13-r4
  • python-3.12< 3.12.11-r6
  • python-3.13< 3.13.6-r0
Debian3 products
  • pypy3All versions (No fix recorded) | < 7.3.21+dfsg-1
  • python3.11< 3.11.2-6+deb12u7
  • python3.13< 3.13.5-2+deb13u1 | < 3.13.6-1
Python software foundation1 product
  • cpython< 3.9.24 | ≥ 3.10.0, < 3.10.19 | ≥ 3.11.0, < 3.11.14 | ≥ 3.12.0, < 3.12.12 | ≥ 3.13.0, < 3.13.6 | ≥ 3.14.0a1, < 3.14.0rc2

8 vendors · 170 products

References

80 links
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