pymumu SmartDNS SVBC Record dns.c _dns_decode_SVCB_HTTPS stack-based overflow_CVE-2026-1425

6.3 / 10

MEDIUM

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X

Description

A security flaw has been discovered in pymumu SmartDNS up to 47.1. This vulnerability affects the function _dns_decode_rr_head/_dns_decode_SVCB_HTTPS of the file src/dns.c of the component SVBC Record Parser. The manipulation results in stack-based buffer overflow. It is possible to launch the attack remotely. A high complexity level is associated with this attack. It is stated that the exploitability is difficult. The patch is identified as 2d57c4b4e1add9b4537aeb403f794a084727e1c8. Applying a patch is advised to resolve this issue.

Basic Information

ID CVE-2026-1425

Source VulDB

Published Jan 26, 2026 at 07:32

Affected Product

Vendor pymumu

Product SmartDNS

Version 47.0

Affected Versions pymumu SmartDNS 47.0
pymumu SmartDNS 47.1

CWE Classification

CWE-121 CWE-119

References

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    "published": "2026-01-26T07:32:06.516Z",
    "modified": "2026-01-26T07:32:06.516Z",
    "type": "cve",
    "title": "pymumu SmartDNS SVBC Record dns.c _dns_decode_SVCB_HTTPS stack-based overflow",
    "source": "VulDB",
    "references": "https://vuldb.com/?id.342841\nhttps://vuldb.com/?ctiid.342841\nhttps://vuldb.com/?submit.736827\nhttps://github.com/pymumu/smartdns/commit/2d57c4b4e1add9b4537aeb403f794a084727e1c8",
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    "sourceData": "pymumu SmartDNS 47.0\npymumu SmartDNS 47.1",
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