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PatchSiren cyber security CVE debrief

CVE-2026-78462 Microsoft CVE debrief

CVE-2026-78462 is an authorization bypass vulnerability in Visual Studio Code that allows an unauthorized attacker to bypass a security feature over a network. The CVE record was published on 2026-09-08T18:20:44.670Z and was last modified on 2026-09-11T21:11:03.717Z. The NVD entry is currently Analyzed. Defenders should verify exposure, assess potential impact, and apply the vendor advisory and patch. The vulnerability has a CVSS score of 8.8, indicating high severity. It is caused by a user-controlled key that can bypass the security feature. Limited information is available, so verification and assessment are crucial.

Vendor
Microsoft
Product
Visual Studio Code
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-08
Original CVE updated
2026-10-14
Advisory published
2026-09-08
Advisory updated
2026-10-14

Who should care

Defenders responsible for Visual Studio Code deployments, especially in network-connected environments, should assess potential exposure and impact.

Why it matters

CVE-2026-78462 is a high-severity authorization bypass vulnerability in Visual Studio Code that requires verification of exposure and assessment of potential impact, especially in network-connected deployments.

  • Verify exposure in network-connected Visual Studio Code deployments.
  • Assess potential impact on the system due to the bypassed security feature.
  • Apply the vendor advisory and patch for CVE-2026-78462.

Technical summary

The CVE-2026-78462 vulnerability allows an unauthorized attacker to bypass a security feature in Visual Studio Code over a network. The CVSS score for this vulnerability is 8.8, indicating a high severity level. The vulnerability is caused by a user-controlled key that can be used to bypass the security feature.

Defensive priority

Defenders should prioritize verifying exposure and assessing potential impact, especially in network-connected Visual Studio Code deployments.

Recommended defensive actions

  • Verify Visual Studio Code deployments for potential exposure, especially in network-connected environments.
  • Assess the security feature bypassed by the vulnerability and potential impact on the system.
  • Review and apply the vendor advisory and patch for CVE-2026-78462.

Evidence notes

The CVE record and NVD detail page provide limited information about the vulnerability, including its CVSS score of 8.8 and a brief description of the authorization bypass issue.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-78462 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-78462

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-78462 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-78462

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.