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.
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Tue, 07 Jul 2026 21:30:00 +0000
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| Description | 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. | |
| Title | GNU Wget 1.25.0 Heap Buffer Overflow via convert_fname() in url.c | |
| Weaknesses | CWE-122 | |
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-07-07T20:32:25.499Z
Reserved: 2026-06-30T20:20:33.790Z
Link: CVE-2026-58471
Updated: 2026-07-07T20:32:19.583Z
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OpenCVE Enrichment
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