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CVE-2025-12239

TOTOLINK A3300R cstecgi.cgi setDdnsCfg buffer overflow

CVSS 8.7 HIGHEPSS 0.8%CWE-119CWE-120
Vexday Risk Score
21Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 8.7EPSS 0.8%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
27 Oct 2025Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
A weakness has been identified in TOTOLINK A3300R 17.0.0cu.557_B20221024. The impacted element is the function setDdnsCfg of the file /cgi-bin/cstecgi.cgi. Executing manipulation can lead to buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be exploited.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Affected products
TOTOLINK · A3300R

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References
https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setDdnsCfg.mdhttps://vuldb.com/?ctiid.329909https://vuldb.com/?id.329909https://vuldb.com/?submit.673721https://www.totolink.net/