Type Vulnerability
Added Microsoft Office software to the Security Updates table.
Microsoft
Exposure of sensitive information to an unauthorized actor in Windows NTLM allows an unauthorized attacker to perform spoofing over a network
CVE-2026-121680
What this means
This is rated high severity (7.5 out of 10). There is no confirmed exploitation of it yet. Ask IT whether the affected products are in your estate.
Full vendor description
Exposure of sensitive information to an unauthorized actor in Windows NTLM allows an unauthorized attacker to perform spoofing over a network.
Scoring and exploitation
7.5/ 10
CVSS 3.1 base scoreHigh
Exploitable over the network without any account, and no one has to click or open anything. High impact on confidentiality.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploitability
Longer bar: easier to attack
Attack vectorNetworkAV:N
Attack complexityLowAC:L
Privileges requiredNonePR:N
User interactionNoneUI:N
ScopeUnchangedS:U
Impact
Longer bar: more harm
ConfidentialityHighC:H
IntegrityNoneI:N
AvailabilityNoneA:N
- ~1% estimated chance of attack in 30 daysModel estimate (): a probability signal, not confirmed exploitation
- Exploited in the wild
- Not confirmed in the
- Not reported
Weaknesses
CWE-522
References
1 link from the CVE record, grouped by site.
msrc.microsoft.com1 link