Quick answers
- Is CVE-2026-108893 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-108893 being exploited in the wild.
- How severe is CVE-2026-108893?
- Critical severity, with a CVSS score of 9.9, published 12 October 2026.
- Which products and versions are affected?
- Linksys E1700 1.0.0.4.003 and earlier.
- Is there a fix for CVE-2026-108893?
- 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-2026-108893 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-108893?
- Check whether you run Linksys E1700 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 stack-based buffer overflow exists in the setVlan function of the /goform/setVlan endpoint in mod_form.so; the vlan_set parameter is copied directly to a stack buffer without length validation, allowing an attacker to overwrite the return address. Remote unauthenticated attackers can trigger a denial of service (crash) or arbitrary code execution via a POST request with a malicious vlan_set value. No vendor patch is available as the vendor did not respond to disclosure.
Affected products
- Linksys E1700 1.0.0.4.003 and earlier
Timeline
- 2026-10-12: disclosed
- exploited: Exploit code publicly available