Quick answers
- Is CVE-2026-77505 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-77505 being exploited in the wild.
- How severe is CVE-2026-77505?
- High severity, with a CVSS score of 8.1, published 8 September 2026.
- Which products and versions are affected?
- DNS Server.
- Is there a fix for CVE-2026-77505?
- 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-2026-77505 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-77505?
- Check whether anything you run is named in the advisory. 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
The vulnerability is a use-after-free (CWE-416) condition in the DNS Server service that allows an unauthenticated network attacker to achieve remote code execution. The exact vulnerable component and root cause are not detailed in the available advisory content, but the defect allows memory that has been freed to be accessed and potentially dereferenced. An attacker on the network can trigger this condition without authentication, leading to out-of-bounds memory access and arbitrary code execution with the privileges of the DNS Server service. A patch is expected from the vendor.
Affected products
- DNS Server
Timeline
- 2026-09-08: disclosed
- 2026-09-08: advisory