CVE-2026-59124
CVE-2026-59124 is a critical-severity vulnerability in Microsoft Windows App with a CVSS 3.x base score of 9.8. 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-502.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- EPSS exploit prediction: 2% (75th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-502
- Affected product: Microsoft Windows App
- Published:
- Last modified:
Description
Deserialization of untrusted data in Microsoft High Performance Computing (HPC) Pack allows an unauthorized attacker to execute code over a network.
Frequently asked questions
- What is CVE-2026-59124?
- Deserialization of untrusted data in Microsoft High Performance Computing (HPC) Pack allows an unauthorized attacker to execute code over a network.
- How severe is CVE-2026-59124?
- CVE-2026-59124 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-59124 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-59124?
- CVE-2026-59124 affects Microsoft Windows App. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-59124?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2026-59124 published?
- CVE-2026-59124 was published on 2026-08-11 and last updated on 2026-08-16.
References
Affected products (1)
- cpe:2.3:a:microsoft:windows_app:*:*:*:*:*:windows:*:*
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