CVE-2025-64657
CVE-2025-64657 is a critical-severity vulnerability in Microsoft Azure Application Gateway 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-787.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- EPSS exploit prediction: 1% (42nd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-199683
- Weakness: CWE-787
- Affected product: Microsoft Azure Application Gateway
- Published:
- Last modified:
Description
Stack-based buffer overflow in Azure Application Gateway allows an unauthorized attacker to elevate privileges over a network.
Frequently asked questions
- What is CVE-2025-64657?
- Stack-based buffer overflow in Azure Application Gateway allows an unauthorized attacker to elevate privileges over a network.
- How severe is CVE-2025-64657?
- CVE-2025-64657 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-2025-64657 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-64657?
- CVE-2025-64657 affects Microsoft Azure Application Gateway. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-64657?
- 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.
- Does CVE-2025-64657 have an EU (EUVD) identifier?
- Yes. CVE-2025-64657 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199683.
- When was CVE-2025-64657 published?
- CVE-2025-64657 was published on 2025-11-26 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:microsoft:azure_application_gateway:-:*:*:*:*:*:*:*
More vulnerabilities in Microsoft Azure Application Gateway
- CVE-2025-64656 — Critical (CVSS 9.4): Out-of-bounds read in Application Gateway allows an unauthorized attacker to elevate privileges over a network.
All CVEs affecting Microsoft Azure Application Gateway →
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