Buffer overflow in Totolink A3300r
CVE-2024-7331
A vulnerability was found in TOTOLINK A3300R 17.0.0cu.557_B20221024 and classified as critical. Affected by this issue is the function UploadCustomModule of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument File leads to buff…
Vulnerability class: Buffer Overflow
EPSS: 0.003 (50.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Totolink A3300r — versions 17.0.0cu.557_B20221024
Weakness classification (CWE)
Public proof-of-concept exploits
References
- VDB-273254 | TOTOLINK A3300R cstecgi.cgi UploadCustomModule buffer overflow (vdb-entry, technical-description)
- VDB-273254 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- Submit #378351 | TOTOLINK A3300R V17.0.0cu.557_B20221024 Buffer Overflow (third-party-advisory)
- github.com/abcdefg-png/IoT-vulnerable/blob/main/TOTOLINK/A3300R/UploadCustomMod… (exploit)
Frequently asked questions
- What is CVE-2024-7331?
- CVE-2024-7331 is a high-severity vulnerability in Totolink A3300r, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2024-08-01.
- How severe is CVE-2024-7331?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2024-7331 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.