How severe is CVE-2026-78462?

CVE-2026-78462 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-78462 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-78462?

CVE-2026-78462 affects Microsoft Visual Studio Code. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-78462?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-78462 published?

CVE-2026-78462 was published on 2026-09-08 and last updated on 2026-09-11.

CVE-2026-78462

CVE-2026-78462 is a high-severity vulnerability in Microsoft Visual Studio Code with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-639.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-639
Affected product: Microsoft Visual Studio Code
Published: 2026-09-08
Last modified: 2026-09-11

Description

Authorization bypass through user-controlled key in Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network.

Frequently asked questions

What is CVE-2026-78462?: Authorization bypass through user-controlled key in Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network.
How severe is CVE-2026-78462?: CVE-2026-78462 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-78462 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-78462?: CVE-2026-78462 affects Microsoft Visual Studio Code. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-78462?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-78462 published?: CVE-2026-78462 was published on 2026-09-08 and last updated on 2026-09-11.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78462

Affected products (1)

cpe:2.3:a:microsoft:visual_studio_code:*:*:*:*:*:-:*:*

More vulnerabilities in Microsoft Visual Studio Code

CVE-2026-81376 — Critical (CVSS 9.6): Incomplete comparison with missing factors in Visual Studio Code allows an unauthorized attacker to bypass a security…
CVE-2026-47281 — Critical (CVSS 9.6): Missing authorization in Visual Studio Code allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-70336 — High (CVSS 8.8): Improper control of generation of code ('code injection') in Visual Studio Code allows an unauthorized attacker to…
CVE-2026-69320 — High (CVSS 8.8): Improper neutralization of special elements used in an os command ('os command injection') in Visual Studio Code allows…
CVE-2026-59113 — High (CVSS 8.8): Missing authorization in Visual Studio Code allows an unauthorized attacker to execute code over a network.
CVE-2026-57102 — High (CVSS 8.8): Inclusion of functionality from untrusted control sphere in Visual Studio Code allows an unauthorized attacker to…

All CVEs affecting Microsoft Visual Studio Code →

Other CWE-639 (Authorization Bypass Through User-Controlled Key (IDOR)) vulnerabilities

CVE-2026-69865 — Critical (CVSS 10.0): Authorization bypass through user-controlled key in Microsoft Container Registry allows an unauthorized attacker to…
CVE-2026-83711 — Critical (CVSS 10.0): Authorization bypass through user-controlled key in Microsoft Azure Active Directory B2C allows an unauthorized…
CVE-2026-77998 — Critical (CVSS 10.0): Joomla Extension - miniorange.com - Unauthenticated Authentication Bypass via SAMLResponse Parameter in miniOrange SAML…
CVE-2026-77995 — Critical (CVSS 10.0): Joomla Extension - miniorange.com - Arbitrary account takeover in miniOrange OAuth Client < 3.2.0, OAuth Single Sign-On…
CVE-2025-40805 — Critical (CVSS 10.0): Affected devices do not properly enforce user authentication on specific API endpoints. This could facilitate an…
CVE-2024-45032 — Critical (CVSS 10.0): A vulnerability has been identified in Industrial Edge Management Pro (All versions < V1.9.5), Industrial Edge…

Browse all CWE-639 (Authorization Bypass Through User-Controlled Key (IDOR)) vulnerabilities →