Numeric truncation error in Windows SMB allows an authorized attacker to execute code over a network
Type Vulnerability
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Numeric truncation error in Windows SMB allows an authorized attacker to execute code over a network
CVE-2026-119988
What this means
This is rated high severity (7.1 out of 10). There is no confirmed exploitation of it yet. Ask IT whether the affected products are in your estate.
Full vendor description
Numeric truncation error in Windows SMB allows an authorized attacker to execute code over a network.
Scoring and exploitation
7.1/ 10
CVSS 3.1 base scoreHigh
Exploitable over the network with a low-privilege account, under specific conditions, but only if a user takes an action, such as opening a file or link. High impact on confidentiality, integrity and availability.
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Exploitability
Longer bar: easier to attack
Attack vectorNetworkAV:N
Attack complexityHighAC:H
Privileges requiredLowPR:L
User interactionRequiredUI:R
ScopeUnchangedS:U
Impact
Longer bar: more harm
ConfidentialityHighC:H
IntegrityHighI:H
AvailabilityHighA:H
- Not reported
- Exploited in the wild
- Not confirmed in the
- Not reported
Weaknesses
CWE-197
References
1 link from the CVE record, grouped by site.
msrc.microsoft.com1 link