CVSS 3.1
6.1 mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:NCVE-2026-122985 Microsoft PowerShell Information Disclosure Vulnerability
Medium (6.1) in microsoft. EPSS 0.7% estimated probability of exploitation activity in the next 30 days.
On this page
Improper restriction of xml external entity reference in Microsoft PowerShell allows an unauthorized attacker to disclose information over a network.
Severity
- EPSS
- 0.7% estimated probability of exploitation activity in the next 30 days; 52nd percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CISA's assessment (SSVC)
- Exploitation: none · Automatable: no · Technical impact: partial, assessed 2026-11-11. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
- CWE
- CWE-611 Improper Restriction of XML External Entity Reference
- OWASP Top 10
- A02:2025 Security Misconfiguration
- Published
- Modified
- Assigned by
- microsoft (CNA)
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
Ask an AI about this CVE
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Explain CVE-2026-122985 for an engineer deciding whether to act. Use https://cve.bz/api/public/cves/CVE-2026-122985?via=ask-ai-copy and https://cve.bz/cve/CVE-2026-122985?via=ask-ai-copy as the source of truth: what is affected and which versions fix it, whether it is in CISA KEV, public exploits, and its EPSS (an internet-wide 30-day estimate of exploitation activity, not a forecast for my systems). If they give no fixed versions, use the CVE record https://cveawg.mitre.org/api/cve/CVE-2026-122985 or the vendor advisory, not third-party mirrors. Tell me how to check whether I am affected and how to verify a fix. Cite the sources and say where they are uncertain.Opens a third-party assistant; its answer is its own, not cve.bz's. The prompt holds only this CVE's id and public links.
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Affected
- microsoft:powershell 7.6
- microsoft:powershell 7.7
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| Microsoft PowerShell 7.6 | from 7.6.0 before 7.6.10 |
| Microsoft PowerShell 7.7 | from 1.0.0 before 7.7.0 |
Attack patterns (CAPEC)
- CAPEC-221 Data Serialization External Entities Blowup
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.