How severe is CVE-2025-26633?

CVE-2025-26633 has a CVSS score of 7/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2025-26633?

Affected package information for CVE-2025-26633 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2025-26633?

No fixed version has been published for CVE-2025-26633 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-2025-26633 actively exploited in the wild?

Yes. There are 2 known exploit references for CVE-2025-26633, including 1 documented proof-of-concept exploit on Exploit-DB. 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-2025-26633?

CVE-2025-26633 has an EPSS (Exploit Prediction Scoring System) score of 46.6%, placing it in the 98th 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. This score warrants monitoring and prompt remediation.

Is CVE-2025-26633 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2025-26633 (Microsoft Windows Management Console (MMC) Improper Neutralization Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2025-03-11. CISA required all US federal civilian agencies to remediate this vulnerability by 2025-04-01. The required action was: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. This CVE has been used in known ransomware campaigns. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2025-26633?

CVE-2025-26633 is classified as CWE-707 (CWE-707). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Which products and versions are affected by CVE-2025-26633?

CVE-2025-26633 affects microsoft windows 10 21h2; microsoft windows 10 22h2; microsoft windows 10 1507; microsoft windows 10 1607, and 11 more product(s). Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2025-26633 published, and has it been updated?

CVE-2025-26633 was published on March 11, 2025 and was last updated on October 27, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2025-03-11 — agencies required to remediate by 2025-04-01 · Ransomware

CVE-2025-26633

HIGH

Improper neutralization in Microsoft Management Console allows an unauthorized attacker to bypass a security feature locally.

Published

Mar 11, 2025

Updated

Oct 27, 2025

Affected

0 pkgs

Patched

None yet

Exploits

2 known

EPSS Exploitation Probability

via FIRST.org ↗

46.6%probability of exploitation in next 30 days

High Risk98th percentile+2.61%

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

Improper neutralization in Microsoft Management Console allows an unauthorized attacker to bypass a security feature locally.

Affected Products

15 products · 28 configurations

windows 10 21h2microsoft

< 10.0.19044.5608

range

windows 10 22h2microsoft

< 10.0.19045.5608

range

windows 10 1507microsoft

< 10.0.10240.20947

range

windows 10 1607microsoft

< 10.0.14393.7876

range

windows 10 1809microsoft

< 10.0.17763.7009

range

windows 11 22h2microsoft

< 10.0.22621.5039

range

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.

EDB-52498localwindows

Microsoft MMC MSC EvilTwin - Local Admin Creation

by Mohammed Idrees Banyamer · Apr 8, 2026

Exploit-DB Source

Frequently Asked Questions

Improper neutralization in Microsoft Management Console allows an unauthorized attacker to bypass a security feature locally.

O3 Security · Impact-Aware SCA

Is CVE-2025-26633 in your stack?

O3 detects CVE-2025-26633 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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