Vulnerability · CVE-2026-23665
Heap-based buffer overflow in Azure Linux Virtual Machines allows an authorized attacker to elevate privileges locally.
Published Mar 10, 2026 · catalog updated Jun 17, 2026 · linux diagnostic extension
Check if you run it
No confirmed exploitation is on record for CVE-2026-23665. EPSS is 0.40%. Act only if a listed version of linux diagnostic extension 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.
- Severity
- High7.8
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.40%
- Remediation
- Advisory link
- Affected products
- cpe microsoft/linux diagnostic extension
Heap-based buffer overflow in Azure Linux Virtual Machines allows an authorized attacker to elevate privileges locally.
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.
- cpe microsoft/linux diagnostic extensionversion unspecified
How to fix CVE-2026-23665
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
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-2026-23665. EPSS is 0.40%. Act only if a listed version of linux diagnostic extension is installed.
Which versions are affected?
Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-122: Heap-based Buffer Overflow; CWE-787: Out-of-bounds Write. EPSS 0.40%. 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.
Mar 10, 2026 · NIST NVD
Detected
Heap-based buffer overflow in Azure Linux Virtual Machines allows an authorized attacker to elevate privileges locally.
Jun 17, 2026 · NIST NVD
Updated
Heap-based buffer overflow in Azure Linux Virtual Machines allows an authorized attacker to elevate privileges locally.
Sources
- CVE.orgVulnerability recordCVE-2026-23665
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-23665
30-day exploitation probability 0.4%
first.org - NIST NVDVulnerability recordCVE-2026-23665
Heap-based buffer overflow in Azure Linux Virtual Machines allows an authorized attacker to elevate privileges locally.
nvd.nist.gov
References
Freshness
Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.