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CVE-2026-58471

6.0 medium SSVC exploitation: none Analyzed
NVD · CVE.org

GNU Wget through 1.25.0, fixed in commit c2640fe, contains a heap buffer overflow vulnerability in the convert_fname() function within src/url.c that allows remote attackers to trigger memory corruption through a server-supplied filename requiring character set conversion. When the output buffer is too small during iconv E2BIG reallocation, the reallocation logic miscalculates the remaining space, leading to a heap buffer overflow that can be exploited via a maliciously crafted server response.

Fix

Patch, vendor advisory and mitigation references on NVD 2

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 6.0 · gnuNVD modified 2026-10-25 20:10

Affected (CPE criteria) 1

  • cpe:2.3:a:gnu:wget:*:*:*:*:*:*:*:*

References 2