CVE-2026-18717 Improper Certificate Validation in ASE 2000
Attackers can bypass TLS certificate validation to impersonate peers and read or modify protected communications in ASE 2000 systems.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-18717?
CVE-2026-18717 is a critical vulnerability in Applied Systems Engineering ASE2000 V2, published on 27 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
ASE2000 2.35 through 2.37 is vulnerable to an improper certificate validation vulnerability, which may allow an attacker to impersonate the trusted peer, complete the TLS handshake, and read or modify protected communications.
Weakness: CWE-295
Which versions are affected by CVE-2026-18717?
How do I fix CVE-2026-18717?
No fix has been published for CVE-2026-18717 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-18717 being exploited?
There is no known exploitation of CVE-2026-18717 in the wild and no public exploit code.
Sources
Also known as GHSA-qvg5-fcgx-c529.