CVE-2026-20872
What it is
External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing over a network.
At a glance
- Exploitability
- Can be exploited over the network without logging in, but needs a user to act. High risk of data exposure.
- Exploit odds
- 19.8% chance of exploitation in the next 30 days (EPSS). Higher than most.
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 19.8% in the next 30 days (EPSS).
- Severity: 6.5 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 19.8% · EPSS, next 30 days
- Weakness
- CWE-73
- Record status
- Modified
Affected
- Microsoft Windows 10 1607 < 10.0.14393.8783
- Microsoft Windows 10 1809 < 10.0.17763.8276
- Microsoft Windows 10 21h2 < 10.0.19044.6809
- Microsoft Windows 10 22h2 < 10.0.19045.6809
- Microsoft Windows 11 23h2 < 10.0.22631.6491
- Microsoft Windows 11 24h2 < 10.0.26100.7623
- Microsoft Windows 11 25h2 < 10.0.26200.7623
- Microsoft Windows Server 2008
Attack profile CVSS 3.1 · 6.5
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-20872.md and follow it. Check whether this project is affected by CVE-2026-20872. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
