CVE•Published 2025-10-27•Modified 2026-10-08•1 article on news•6 live references•NVD data
CVE-2025-12239Totolink · A3300r_firmware
Vulnerability data via NVD (ingested)
CVSS v3.1
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
56
Exploit Prediction Scoring System · top 44% of all CVEs
Weaknesses (CWE)
Description
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.
Timeline
Published 2025-10-27
Modified 2026-10-08
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2025-12239Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · OS
os:"A3300r Firmware"Hosts Shodan identified as running A3300r Firmware.
More intel sources (5)
Shodan report
vuln:CVE-2025-12239Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2025-12239Censys host search filtered to this CVE id.
grep.app
CVE-2025-12239Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2025-12239GitHub code search for direct mentions.
Google dork
"CVE-2025-12239" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2025-12239 on GitHub.