CVE-2026-69577: Out-of-bounds read in Microsoft Azure Attestation service and Device Health Attestation Service allows an unau

Q: How do I fix CVE-2026-69577?

windows server 2019: upgrade to 10.0.17763.9376; windows server 2022: upgrade to 10.0.20348.5761; windows server 2025: upgrade to 10.0.26100.33650. Exact commands for each OS are on this page.

Q: Is CVE-2026-69577 being exploited?

CVE-2026-69577 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-69577 affect?

CVE-2026-69577 affects windows server 2019, windows server 2022, windows server 2025. Severity is high (CVSS 7.5). Out-of-bounds read in Microsoft Azure Attestation service and Device Health Attestation Service allows an unauthorized attacker to disclose information over a network.

Q: How urgent is CVE-2026-69577?

Priority 53/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

This month

HIGH 7.5REMOTEWATCHLISTUPGRADEUPGRADEUPGRADE

CVE-2026-69577 is a high-severity flaw (CVSS 7.5) affecting windows server 2019, windows server 2022, windows server 2025. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Out-of-bounds read in Microsoft Azure Attestation service and Device Health Attestation Service allows an unauthorized attacker to disclose information over a network.

Why this priority

High severity
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-125
Published	2026-10-13
Last modified	2026-10-27

Publisher (CNA): Microsoft Corporation · Vendor: microsoft

Last updated 2026-10-27 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-13 19:18 UTCPublished CVE record published
2026-10-27 15:37 UTCUpdated Record last modified

microsoft windows server 2019 UPGRADE

Affected: < 10.0.17763.9376

Fixed in: 10.0.17763.9376

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

microsoft windows server 2022 UPGRADE

Affected: < 10.0.20348.5761

Fixed in: 10.0.20348.5761

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

microsoft windows server 2025 UPGRADE

Affected: < 10.0.26100.33650

Fixed in: 10.0.26100.33650

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-69577?

windows server 2019: upgrade to 10.0.17763.9376; windows server 2022: upgrade to 10.0.20348.5761; windows server 2025: upgrade to 10.0.26100.33650. Exact commands for each OS are on this page.

Is CVE-2026-69577 being exploited?

CVE-2026-69577 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-69577 affect?

CVE-2026-69577 affects windows server 2019, windows server 2022, windows server 2025. Severity is high (CVSS 7.5). Out-of-bounds read in Microsoft Azure Attestation service and Device Health Attestation Service allows an unauthorized attacker to disclose information over a network.

How urgent is CVE-2026-69577?

Priority 53/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Windows vulnerabilities · Windows Server vulnerabilities · Azure vulnerabilities

Related CVEs

CVE-2026-103576 MEDIUM 6.5 UPGRADE UPGRADE Url redirection to untrusted site ('open redirect') in Active Directory Federation Services (AD FS) allows an
CVE-2026-69802 HIGH 8.1 MITIGATE UPGRADE Weak authentication in Network Device Enrollment Service (NDES) allows an unauthorized attacker to execute cod
CVE-2026-26154 HIGH 7.5 MITIGATE UPGRADE Improper input validation in Windows Server Update Service allows an unauthorized attacker to perform tamperin
CVE-2026-27913 HIGH 7.7 MITIGATE UPGRADE Improper input validation in Windows BitLocker allows an unauthorized attacker to bypass a security feature lo
CVE-2026-27928 HIGH 8.7 UPGRADE UPGRADE Improper input validation in Windows Hello allows an unauthorized attacker to bypass a security feature over a

References

← Back to latest CVEs