Quick answers
- Is CVE-2026-96957 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-96957 being exploited in the wild.
- How severe is CVE-2026-96957?
- High severity, with a CVSS score of 8.8, published 13 October 2026.
- Which products and versions are affected?
- Microsoft .NET.
- Is there a fix for CVE-2026-96957?
- 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-2026-96957 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-96957?
- Check whether you run Apple macOS, Linux Kernel, Microsoft .Net or one of the others listed. 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 involves improper verification of cryptographic signatures in .NET, allowing an attacker to bypass signature validation checks over a network. This is a CWE-347 class flaw affecting the core cryptographic validation logic. An attacker with network access can exploit this without authentication to bypass security mechanisms that rely on signed data integrity.
Affected products
- Microsoft .NET
Timeline
- 2026-10-13: disclosed