Security September 2026 CVE-2026-78461
AssessmentImproper limitation of a pathname to a restricted directory ('path traversal') in Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network.
Severity Important
CVSS base score 7.4
Impact Security Feature Bypass
Exploitation detected No known exploitation (MSRC assessment)
Exploitability Exploitation Less Likely
Publicly disclosed No (MSRC assessment)
EPSS · 30-day forecast 1.0% FIRST forecast dated 10 Nov 2026, for the following 30 days · FIRST percentile 64.2% · about EPSS
Customer action Required: follow the MSRC remediation guidance
More details
CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C
Public detection template No Nuclei template is listed in the current collected catalog
Component Visual Studio Code
Weakness CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Issued by Microsoft
Last revised 8 Sep 2026 CVSS 3.1 base metrics Red raises the risk · green lowers it
Attack vector NetworkAV:N
Attack complexity LowAC:L
Privileges required NonePR:N
User interaction RequiredUI:R
Scope ChangedS:C
Confidentiality HighC:H
Integrity NoneI:N
Availability NoneA:N
Updates that fix it0 KBs No KB listed No KB update is listed in the collected MSRC record. Check the MSRC advisory for product releases and other remedies.
Affected productsDeveloper Tools
Source. This summary comes from MSRC's public CVRF document for September 2026. If the MSRC page is blocked in your browser, the NVD and CVE.org records carry the same identifier. None of this says whether your devices are affected.
What changed
Detection template: Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed
6 Nov 2026 · 17:32:22 UTC Detection template: No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
6 Nov 2026 · 16:31:02 UTC Detection template: Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed
2 Nov 2026 · 17:30:39 UTC Detection template: No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
2 Nov 2026 · 16:27:39 UTC Detection template: No Nuclei template listed · Customer action: Required: apply the update → Required: follow the MSRC remediation guidance · Public disclosure: No → No (MSRC assessment) · Exploitation detected: Not reported by MSRC → No known exploitation (MSRC assessment)
29 Oct 2026 Detection template: Unknown: exploit-code evidence is incomplete or retained → No Nuclei template listed · CISA KEV: Unknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
23 Oct 2026 · 09:33:49 UTC Detection template: No Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained · CISA KEV: Not listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
23 Oct 2026 · 08:31:50 UTC Page history
Changes are dated when recorded; day views use the last saved version from that UTC day, and citations stay fixed.
Cite this version Field-level log (61)
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10 Nov 2026 · 18:32:11 UTC
EPSS 1.0%; scored 9 Nov 2026 → 1.0%; scored 10 Nov 2026 9 Nov 2026 · 22:24:37 UTC
EPSS 1.0%; scored 8 Nov 2026 → 1.0%; scored 9 Nov 2026 8 Nov 2026 · 15:16:05 UTC
EPSS 1.0%; scored 7 Nov 2026 → 1.0%; scored 8 Nov 2026 7 Nov 2026 · 16:12:44 UTC
EPSS 1.0%; scored 6 Nov 2026 → 1.0%; scored 7 Nov 2026 6 Nov 2026 · 19:15:37 UTC
EPSS 1.0%; scored 5 Nov 2026 → 1.0%; scored 6 Nov 2026 6 Nov 2026 · 17:32:22 UTC
Public detection template Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed 6 Nov 2026 · 17:32:22 UTC
Source coverage: public-exploit-code Incomplete → Current 6 Nov 2026 · 17:32:22 UTC
Source coverage: first-epss Incomplete → Current 6 Nov 2026 · 17:32:22 UTC
Source coverage: msrc-cvrf Incomplete → Current 6 Nov 2026 · 16:31:02 UTC
Public detection template No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained 6 Nov 2026 · 16:31:02 UTC
Source coverage: public-exploit-code Current → Incomplete 6 Nov 2026 · 16:31:02 UTC
Source coverage: first-epss Current → Incomplete 6 Nov 2026 · 16:31:02 UTC
Source coverage: msrc-cvrf Current → Incomplete 5 Nov 2026 · 23:42:03 UTC
EPSS 1.0%; scored 4 Nov 2026 → 1.0%; scored 5 Nov 2026 5 Nov 2026 · 02:36:20 UTC
EPSS 1.0%; scored 3 Nov 2026 → 1.0%; scored 4 Nov 2026 4 Nov 2026 · 03:04:37 UTC
EPSS 1.0%; scored 2 Nov 2026 → 1.0%; scored 3 Nov 2026 3 Nov 2026 · 01:53:36 UTC
EPSS 1.0%; scored 1 Nov 2026 → 1.0%; scored 2 Nov 2026 2 Nov 2026 · 17:30:39 UTC
Public detection template Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed 2 Nov 2026 · 17:30:39 UTC
Source coverage: public-exploit-code Incomplete → Current 2 Nov 2026 · 17:30:39 UTC
Source coverage: first-epss Incomplete → Current 2 Nov 2026 · 17:30:39 UTC
Source coverage: msrc-cvrf Incomplete → Current 2 Nov 2026 · 16:27:39 UTC
Public detection template No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained 2 Nov 2026 · 16:27:39 UTC
Source coverage: public-exploit-code Current → Incomplete 2 Nov 2026 · 16:27:39 UTC
Source coverage: first-epss Current → Incomplete 2 Nov 2026 · 16:27:39 UTC
Source coverage: msrc-cvrf Current → Incomplete 2 Nov 2026 · 00:36:51 UTC
EPSS 1.0%; scored 31 Oct 2026 → 1.0%; scored 1 Nov 2026 31 Oct 2026 · 18:22:15 UTC
EPSS 1.0%; scored 30 Oct 2026 → 1.0%; scored 31 Oct 2026 30 Oct 2026 · 18:02:45 UTC
EPSS 1.0%; scored 29 Oct 2026 → 1.0%; scored 30 Oct 2026 29 Oct 2026 · 20:19:26 UTC
Public detection template No Nuclei template listed 29 Oct 2026 · 20:19:26 UTC
Customer action Required: apply the update → Required: follow the MSRC remediation guidance 29 Oct 2026 · 20:19:26 UTC
Publicly disclosed No → No (MSRC assessment) 29 Oct 2026 · 20:19:26 UTC
Exploitation detected Not reported by MSRC → No known exploitation (MSRC assessment) 29 Oct 2026 · 18:33:30 UTC
EPSS 1.0%; scored 28 Oct 2026 → 1.0%; scored 29 Oct 2026 28 Oct 2026 · 20:00:33 UTC
EPSS 1.0%; scored 27 Oct 2026 → 1.0%; scored 28 Oct 2026 27 Oct 2026 · 15:48:13 UTC
EPSS 1.0%; scored 26 Oct 2026 → 1.0%; scored 27 Oct 2026 26 Oct 2026 · 23:57:09 UTC
EPSS 1.0%; scored 25 Oct 2026 → 1.0%; scored 26 Oct 2026 25 Oct 2026 · 17:12:51 UTC
EPSS 1.0%; scored 24 Oct 2026 → 1.0%; scored 25 Oct 2026 25 Oct 2026 · 01:34:18 UTC
EPSS 1.0%; scored 23 Oct 2026 → 1.0%; scored 24 Oct 2026 23 Oct 2026 · 15:51:28 UTC
EPSS 1.0%; scored 22 Oct 2026 → 1.0%; scored 23 Oct 2026 23 Oct 2026 · 09:33:49 UTC
Public exploit code Unknown: exploit-code evidence is incomplete or retained → No Nuclei template listed 23 Oct 2026 · 09:33:49 UTC
CISA KEV Unknown: catalog evidence is incomplete or retained → Not listed in the collected catalog 23 Oct 2026 · 09:33:49 UTC
Source coverage: public-exploit-code Incomplete → Current 23 Oct 2026 · 09:33:49 UTC
Source coverage: first-epss Incomplete → Current 23 Oct 2026 · 09:33:49 UTC
Source coverage: cisa-kev Incomplete → Current 23 Oct 2026 · 09:33:49 UTC
Source coverage: msrc-cvrf Incomplete → Current 23 Oct 2026 · 08:31:50 UTC
Public exploit code No Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained 23 Oct 2026 · 08:31:50 UTC
CISA KEV Not listed in the collected catalog → Unknown: catalog evidence is incomplete or retained 23 Oct 2026 · 08:31:50 UTC
Source coverage: public-exploit-code Current → Incomplete 23 Oct 2026 · 08:31:50 UTC
Source coverage: first-epss Current → Incomplete 23 Oct 2026 · 08:31:50 UTC
Source coverage: cisa-kev Current → Incomplete 23 Oct 2026 · 08:31:50 UTC
Source coverage: msrc-cvrf Current → Incomplete 22 Oct 2026 · 17:33:15 UTC
EPSS 1.0%; scored 21 Oct 2026 → 1.0%; scored 22 Oct 2026 21 Oct 2026 · 21:47:24 UTC
EPSS 1.0%; scored 20 Oct 2026 → 1.0%; scored 21 Oct 2026 20 Oct 2026 · 20:53:31 UTC
EPSS 1.0%; scored 19 Oct 2026 → 1.0%; scored 20 Oct 2026 19 Oct 2026 · 15:12:40 UTC
EPSS 1.0%; scored 18 Oct 2026 → 1.0%; scored 19 Oct 2026 18 Oct 2026 · 14:54:30 UTC
EPSS 1.0%; scored 16 Oct 2026 → 1.0%; scored 18 Oct 2026 18 Oct 2026 · 14:54:30 UTC
Link: September 2026 /security?release=2026-Sep#cves 16 Oct 2026 · 16:13:25 UTC
EPSS 1.0%; scored 15 Oct 2026 → 1.0%; scored 16 Oct 2026 15 Oct 2026 · 21:30:54 UTC
EPSS 1.0%; scored 14 Oct 2026 → 1.0%; scored 15 Oct 2026 15 Oct 2026 · 01:07:54 UTC
EPSS 1.0%; scored 13 Oct 2026 → 1.0%; scored 14 Oct 2026 14 Oct 2026 · 11:22:42 UTC
Source coverage: msrc-cvrf Incomplete → Current Explore global source statements, affected packages and advisory history for CVE-2026-78461 . The catalog has a separate collection scope from Microsoft release records.