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Exploited vulnerability · CISA KEV

Is CVE-2022-26925 exploited? Yes: in CISA KEV since 1 Jul 2022

Gociux · Microsoft Windows · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2022-26925, Microsoft Windows LSA Spoofing Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 1 Jul 2022, 52 days after it was published. It affects Microsoft Windows. If you run it, CISA's required action is: Apply remediation actions outlined in CISA guidance [https://www.cisa.gov/guidance-applying-june-microsoft-patch].

exploitedYesCISA KEV · 1 Jul 2022
ransomwareNot knownno confirmed use
EPSStop 5%very likely to be exploited
severity8.1CVSS 3.1 · high
US federal due22 Jul 2022BOD 22-01 deadline

What it is

Microsoft Windows Local Security Authority (LSA) contains a spoofing vulnerability where an attacker can coerce the domain controller to authenticate to the attacker using NTLM.

VendorMicrosoft (391 exploited CVEs in KEV)
ProductWindows
VulnerabilityMicrosoft Windows LSA Spoofing Vulnerability
WeaknessCWE-306
Published10 May 2022
Added to KEV1 Jul 2022
Reported by (CNA)microsoft

What to do

  1. Check whether you run it. Look for Windows in your asset inventory, including appliances and cloud images. Stack check lists every exploited Microsoft CVE at once.
  2. Apply the fix. Apply remediation actions outlined in CISA guidance [https://www.cisa.gov/guidance-applying-june-microsoft-patch].
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 10 May 2022.
  4. Get told next time. Email alerts when CISA adds a CVE for Microsoft.

Other exploited CVEs in Windows

References

Questions

Is CVE-2022-26925 being exploited?

Yes. CISA added CVE-2022-26925 to the Known Exploited Vulnerabilities catalog on 1 Jul 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2022-26925 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2022-26925?

Apply remediation actions outlined in CISA guidance [https://www.cisa.gov/guidance-applying-june-microsoft-patch]. Check Microsoft's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Windows and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in July 2022 · Microsoft scorecard · act-now radar.

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