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CVE-2026-114583VulnerabilityPublished Updated

Microsoft · tar filter allows writing outside destination via empty-named symlink

Affects MicrosoftSource GCVE Database

0
Authoritative record:CVE-2026-114583· Medium 6.9

Not known to be exploited · CVSS 6.9 Medium · fixed in 3.16.0 : update Microsoft when convenient.

Data as of 28 Oct 2026, 08:59 UTC

CVSS 4.0 base score
6.9Medium
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 3.16.0, 3.15.2, 3.14.10 +3
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
Python Software FoundationCPythonAffected
  • >=3.16.0a1 <3.16.0
Fixed in
  • 3.16.0
Python Software FoundationCPythonAffected
  • >=3.15.0 <3.15.2
Fixed in
  • 3.15.2
Python Software FoundationCPythonAffected
  • >=3.14.0 <3.14.10
Fixed in
  • 3.14.10
Python Software FoundationCPythonAffected
  • >=3.13.0 <3.13.18
Fixed in
  • 3.13.18
Python Software FoundationCPythonAffected
  • >=3.12.0 <3.12.16
Fixed in
  • 3.12.16
Python Software FoundationCPythonAffected
  • <3.11.18
Fixed in
  • 3.11.18

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

A vulnerability identified as CVE-2026-114583 affects Microsoft software version 3.0, where the tar filter allows writing outside the intended destination directory via an empty-named symbolic link. This could potentially lead to unauthorized file writes outside the extraction path.

References

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