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.
References (5)
Core 5
Core References
Permissions Required, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.342841
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.342841
Permissions Required, VDB Entry third-party-advisory
https://vuldb.com/?submit.736827
Scores
CVSS v3
5.6
EPSS
0.0002
EPSS Percentile
5.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-119
CWE-121
Status
published
Products (2)
pymumu/SmartDNS
47.0
pymumu/SmartDNS
47.1
Published
Jan 26, 2026
Tracked Since
Feb 18, 2026