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Known exploited509Public exploitation evidenceCritical589Highest vendor severityHigh severity2,780Includes MSRC ImportantRecently updated8Updated or KEV-added in 7 days

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Last collection: October 21, 2026
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Medium
CVE-2026-72522Microsoft

libexpat before 2.8.3 has an out-of-bounds read and resultant infinite loop because low surrogates are treated the same as high surrogates during Unicode processing in the…

libexpat before 2.8.3 has an out-of-bounds read and resultant infinite loop because low surrogates are treated the same as high surrogates during Unicode processing in the *_toUtf16 functions.

CVSS
6.2
Update availability
Patch status unknown

Affected: azl3 expat 2.8.2-1 on Azure Linux 3.0

Updated

View technical details for CVE-2026-72522MSRC

Sources & coverage

The collection starts with 90 days of Microsoft updates and CISA additions, plus older Microsoft vulnerabilities still listed by CISA. Older entries do not imply that a product remains supported. Counts describe this collection, not every vulnerability or any customer environment.

Microsoft Security Response Center (opens in a new tab)

Last successful check: October 13, 2026

CISA Known Exploited Vulnerabilities (opens in a new tab)

Last successful check: October 21, 2026

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Security bulletins are provided for informational purposes and compiled from authoritative public sources. Vulnerability applicability varies by environment. Validate affected products, configuration, compatibility requirements, and vendor guidance before making production changes.