Quick answers
- Is CVE-2026-83910 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-83910 being exploited in the wild.
- How severe is CVE-2026-83910?
- Critical severity, with a CVSS score of 9.8, published 13 October 2026.
- Which products and versions are affected?
- Microsoft RPC Runtime <UNKNOWN>.
- Is there a fix for CVE-2026-83910?
- 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-2026-83910 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-83910?
- Check whether you run Microsoft RPC Runtime 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
An out-of-bounds write vulnerability in the RPC Runtime allows remote code execution when processing maliciously crafted network requests. The flaw requires no authentication and can be triggered over the network, making it exploitable by unauthenticated remote attackers.
Affected products
- Microsoft RPC Runtime <UNKNOWN>
Timeline
- 2026-10-13: disclosed