Quick answers
- Is CVE-2026-90605 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-90605 being exploited in the wild.
- How severe is CVE-2026-90605?
- Critical severity, with a CVSS score of 9.9, published 14 September 2026.
- Which products and versions are affected?
- TOTOLINK A3002MU Hh-B20211125.1046.
- Is there a fix for CVE-2026-90605?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-90605 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-90605?
- Check whether you run TOTOLINK A3002MU at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A buffer overflow vulnerability exists in the /bin/boa web server's formFilter function, specifically in the handling of the ip6addr parameter. The vulnerable code uses unsafe string-copy operations (strcpy) without proper length validation, allowing an attacker to send an oversized IPv6 address value via POST request to /boafrm/formFilter. No authentication is required; the attack vector is purely network-based. Successful exploitation overwrites adjacent memory and crashes the Boa process, resulting in denial of service. A proof-of-concept exploit has been publicly disclosed.
Affected products
- Totolink A3002MU Hh-B20211125.1046
Timeline
- 2026-09-14: disclosed: CVE-2026-90605 published; exploit proof-of-concept made public