How severe is CVE-2022-26809?

CVE-2022-26809 has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by CVE-2022-26809?

Affected package information for CVE-2022-26809 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2022-26809?

No fixed version has been published for CVE-2022-26809 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2022-26809 actively exploited in the wild?

Yes. There are 32 known exploit references for CVE-2022-26809, including 25 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2022-26809?

CVE-2022-26809 has an EPSS (Exploit Prediction Scoring System) score of 92.6%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Which products and versions are affected by CVE-2022-26809?

CVE-2022-26809 affects microsoft windows 7; microsoft windows 8.1; microsoft windows 10 (6 versions, e.g. 20h2, 21h1, 21h2…); microsoft windows 11, and 6 more product(s). Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2022-26809 published, and has it been updated?

CVE-2022-26809 was published on April 15, 2022 and was last updated on November 21, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CVE-2022-26809

CRITICAL

Remote Procedure Call Runtime Remote Code Execution Vulnerability

Published

Apr 15, 2022

Updated

Nov 21, 2024

Affected

0 pkgs

Patched

None yet

Exploits

32 known

EPSS Exploitation Probability

via FIRST.org ↗

92.6%probability of exploitation in next 30 days

Very High Risk100th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

Remote Procedure Call Runtime Remote Code Execution Vulnerability

Affected Products

10 products · 20 configurations

windows 7microsoft

all

windows 8.1microsoft

all

windows 10microsoft

6 versions

20h221h121h2160718091909

windows 11microsoft

all

windows rt 8.1microsoft

all

windows server 2008microsoft

1 version

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Remote Procedure Call Runtime Remote Code Execution Vulnerability

github.comGithubApr 2022

Remote Procedure Call Runtime Remote Code Execution Vulnerability

github.comGithubApr 2022

Remote Procedure Call Runtime Remote Code Execution Vulnerability

github.comGithubApr 2022

Remote Procedure Call Runtime Remote Code Execution Vulnerability

github.comGithubApr 2022

Remote Procedure Call Runtime Remote Code Execution Vulnerability

github.comGithubApr 2022

Remote Procedure Call Runtime Remote Code Execution Vulnerability

github.comGithubApr 2022

Remote Procedure Call Runtime Remote Code Execution Vulnerability

github.comGithubApr 2022

Remote Procedure Call Runtime Remote Code Execution Vulnerability

github.comGithubApr 2022

Remote Procedure Call Runtime Remote Code Execution Vulnerability

github.comGithubApr 2022

Remote Procedure Call Runtime Remote Code Execution Vulnerability

github.comGithubApr 2022

Frequently Asked Questions

Remote Procedure Call Runtime Remote Code Execution Vulnerability

O3 Security · Impact-Aware SCA

Is CVE-2022-26809 in your stack?

O3 detects CVE-2022-26809 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

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