Vulnerability · CVE-2025-64656
Out-of-bounds read in Application Gateway allows an unauthorized attacker to elevate privileges over a network.
Published Nov 26, 2025 · catalog updated Feb 26, 2026 · Microsoft Azure App Gateway
Last checked Nov 5, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2025-64656. EPSS is 0.67%. Act only if a listed version of Microsoft Azure App Gateway is installed.
Gaps on this record
- No version range is stored. A customer cannot check an installed version against this record.
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2025-64657 · Critical
- Severity
- Critical9.4
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.67%
- Remediation
- Advisory link
- Affected products
- vendor Microsoft Azure App Gateway -
Out-of-bounds read in Application Gateway allows an unauthorized attacker to elevate privileges over a network.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor Microsoft Azure App Gateway --
How to fix CVE-2025-64656
No stored fix
No vendor fix text is stored. Use the linked advisory before you change production.
Version check
No version range is stored, so an installed version cannot be checked on this page.
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2025-64656. EPSS is 0.67%. Act only if a listed version of Microsoft Azure App Gateway is installed.
Which versions are affected?
Compare what you have installed with Microsoft Azure App Gateway - -. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.67%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Nov 26, 2025 · EUVD
Detected
Out-of-bounds read in Application Gateway allows an unauthorized attacker to elevate privileges over a network.
Feb 26, 2026 · EUVD
Updated
Out-of-bounds read in Application Gateway allows an unauthorized attacker to elevate privileges over a network.
Sources
- CVE.orgVulnerability recordCVE-2025-64656
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-64656
30-day exploitation probability 0.67%
first.org - EUVDVulnerability recordEUVD-2025-199684
Out-of-bounds read in Application Gateway allows an unauthorized attacker to elevate privileges over a network.
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSNov 5, 2026
- CVE.orgOct 27, 2026
- EUVDOct 26, 2026