Type Vulnerability
Improper certificate validation in Visual Studio allows an unauthorised attacker to perform spoofing over a network.
Microsoft
Visual Studio Spoofing Vulnerability
CVE-2026-118147
What this means
This is rated high severity (7.4 out of 10). There is no confirmed exploitation of it yet. Ask IT whether the affected products are in your estate.
Full vendor description
Improper certificate validation in Visual Studio allows an unauthorized attacker to perform spoofing over a network.
Scoring and exploitation
7.4/ 10
CVSS 3.1 base scoreHigh
Exploitable over the network without any account, under specific conditions, and no one has to click or open anything. High impact on confidentiality and integrity.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Exploitability
Longer bar: easier to attack
Attack vectorNetworkAV:N
Attack complexityHighAC:H
Privileges requiredNonePR:N
User interactionNoneUI:N
ScopeUnchangedS:U
Impact
Longer bar: more harm
ConfidentialityHighC:H
IntegrityHighI:H
AvailabilityNoneA:N
- ~0.6% 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-295
References
1 link from the CVE record, grouped by site.
msrc.microsoft.com1 link