CVE-2025-8194

HIGH EPSS 44.8%
Published Jul 28, 202511mo ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Jul 28, 2025 11mo ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
44.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-835

References 13

  • openwall.com http://www.openwall.com/lists/oss-security/2025/07/28/1
  • openwall.com http://www.openwall.com/lists/oss-security/2025/07/28/2
  • gist.github.com https://gist.github.com/sethmlarson/1716ac5b82b73dbcbf23ad2eff8b33e1
  • github.com https://github.com/python/cpython/commit/57f5981d6260ed21266e0c26951b8564cc252bc2
  • github.com https://github.com/python/cpython/commit/7040aa54f14676938970e10c5f74ea93cd56aa38
  • github.com https://github.com/python/cpython/commit/73f03e4808206f71eb6b92c579505a220942ef19
  • github.com https://github.com/python/cpython/commit/b4ec17488eedec36d3c05fec127df71c0071f6cb
  • github.com https://github.com/python/cpython/commit/c9d9f78feb1467e73fd29356c040bde1c104f29f
  • github.com https://github.com/python/cpython/commit/cdae923ffe187d6ef916c0f665a31249619193fe
  • github.com https://github.com/python/cpython/commit/fbc2a0ca9ac8aff6887f8ddf79b87b4510277227
  • github.com https://github.com/python/cpython/issues/130577
  • github.com https://github.com/python/cpython/pull/137027
  • mail.python.org https://mail.python.org/archives/list/security-announce@python.org/thread/ZULLF3IZ726XP5EY7XJ7YIN3K5MDYR2D/

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.