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CVE-2025-33057VulnerabilityPublished Updated

CVE-2025-33057: Microsoft Windows 10 Version 1507 · NULL Pointer Dereference

Affects Microsoft Windows 10 Version 1507Source CVE Database V5

0

Not known to be exploited · CVSS 6.5 Medium.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.7% chance of exploitation in 30 days – higher than 78% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Jun 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

Affected software

ProductAffectedFixed in
Microsoft Windows 10 Version 1507Affected
  • =10.0.10240.0
Fixed in–

AI-suggested

1. Restrict network access to systems running Windows 10 Version 1507, especially limiting access to trusted users and devices to reduce the attack surface. 2. Monitor event logs and system behavior for signs of LSA service crashes or unusual authentication failures that may indicate exploitation attempts. 3. Implement network segmentation to isolate vulnerable legacy systems from critical infrastructure and sensitive data environments. 4. Prepare incident response plans specifically addressing denial of service scenarios impacting authentication services. 5. Expedite plans to upgrade or migrate from Windows 10 Version 1507 to supported, patched Windows versions to eliminate exposure. 6. Once Microsoft releases patches or mitigations, apply them promptly following testing in controlled environments. 7. Employ application whitelisting and privilege management to limit the ability of unauthorized users or processes to invoke network requests against LSA. 8. Use intrusion detection systems (IDS) and endpoint detection and response (EDR) tools to detect anomalous network traffic targeting LSA components. 9. Educate system administrators about this vulnerability and ensure they follow best practices for managing legacy Windows systems.

Description

Null pointer dereference in Windows Local Security Authority (LSA) allows an authorized attacker to deny service over a network.

References

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