August 2026 Patch TuesdayMSRC-2026-08-developer-tools-7-4-19-0Normal patch window

Microsoft · MSRC-2026-08-developer-tools-7-4-19-0

Linked CVE review

Deploy Microsoft Developer Tools update for PowerShell 7.4

Linked CVEs: 5
Confirmed exploited: 0
PoC or lab evidence: 0
Maximum CVSS: 8.8

Evidence is kept separate

Confirmed exploitation, public exploit material, EPSS probability and CVSS severity answer different questions. “No confirmation recorded” means the checked sources do not currently confirm exploitation. It is not proof that exploitation has not occurred.

5 of 5 linked CVEs shown

Confirmed exploitedCVSS above 9.0

CVE and description	Severity	Exploit reality	Forecast and access	Remediation
CVE-2026-70337 Scheduled assessment Microsoft PowerShell Remote Code Execution Vulnerability Relative path traversal in Microsoft PowerShell Core allows an unauthorized attacker to execute code over a network.	8.8 · CVSS 3.1 · HighSource: CNA	No confirmation recordedNo CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.None recordedNo exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.	EPSS: 0.94% · 59.7th percentileForecast date: 2026-10-07NETWORK · LOW complexity · NONE privileges · REQUIRED user interaction	Within 7 daysHigh technical severity; prioritise exposed affected systems while verifying vendor guidance.Mitigation available. No fixed version is explicitly recorded in the structured CVE data.
CVE-2026-58612 Scheduled assessment PowerShell Information Disclosure Vulnerability Server-side request forgery (ssrf) in Microsoft PowerShell Core allows an unauthorized attacker to disclose information over a network.	7.4 · CVSS 3.1 · HighSource: CNA	No confirmation recordedNo CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.None recordedNo exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.	EPSS: 0.87% · 57.7th percentileForecast date: 2026-10-07NETWORK · LOW complexity · NONE privileges · REQUIRED user interaction	Within 7 daysHigh technical severity; prioritise exposed affected systems while verifying vendor guidance.Mitigation available. No fixed version is explicitly recorded in the structured CVE data.
CVE-2026-59119 Scheduled assessment PowerShell Elevation of Privilege Vulnerability Incorrect default permissions in Microsoft PowerShell allows an authorized attacker to elevate privileges locally.	7.3 · CVSS 3.1 · HighSource: CNA	No confirmation recordedNo CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.None recordedNo exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.	EPSS: 0.38% · 30.0th percentileForecast date: 2026-10-07LOCAL · LOW complexity · LOW privileges · REQUIRED user interaction	Within 7 daysHigh technical severity; prioritise exposed affected systems while verifying vendor guidance.Mitigation available. No fixed version is explicitly recorded in the structured CVE data.
CVE-2026-70338 Scheduled assessment Microsoft PowerShell Security Feature Bypass Vulnerability Improper control of generation of code ('code injection') in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.	7.8 · CVSS 3.1 · HighSource: CNA	No confirmation recordedNo CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.None recordedNo exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.	EPSS: 0.36% · 27.6th percentileForecast date: 2026-10-07LOCAL · LOW complexity · NONE privileges · REQUIRED user interaction	Within 7 daysHigh technical severity; prioritise exposed affected systems while verifying vendor guidance.Mitigation available. No fixed version is explicitly recorded in the structured CVE data.
CVE-2026-50523 Scheduled assessment Microsoft PowerShell Remote Code Execution Vulnerability Improper neutralization of special elements used in a command ('command injection') in Microsoft PowerShell allows an authorized attacker to execute code locally.	7.8 · CVSS 3.1 · HighSource: CNA	No confirmation recordedNo CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.None recordedNo exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.	EPSS: 0.32% · 23.2th percentileForecast date: 2026-10-07LOCAL · LOW complexity · LOW privileges · NONE user interaction	Within 7 daysHigh technical severity; prioritise exposed affected systems while verifying vendor guidance.Awaiting fix. No fixed version is explicitly recorded in the structured CVE data.