Quick answers
- Is CVE-2026-77532 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-77532 being exploited in the wild.
- How severe is CVE-2026-77532?
- Critical severity, with a CVSS score of 9.6, published 26 August 2026.
- Which products and versions are affected?
- Ubiquiti EdgeMax EdgeSwitch <UNKNOWN>.
- Is there a fix for CVE-2026-77532?
- 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-2026-77532 attacked?
- It is attacked from the adjacent network, in a network appliance.
- Am I affected by CVE-2026-77532?
- Check whether you run Ubiquiti EdgeMax EdgeSwitch 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 DHCPv6 implementation of EdgeMax EdgeSwitch devices. An unauthenticated attacker with network adjacency (same local network segment) can send specially crafted DHCPv6 packets to trigger the overflow and achieve remote code execution (RCE). The vulnerability requires no user interaction or prior authentication. A patch is likely available through Ubiquiti's security advisories.
Affected products
- Ubiquiti EdgeMax EdgeSwitch <UNKNOWN>
Timeline
- 2026-08-26: disclosed
- other: CVE-2026-77532 assigned