Zero-Days Lurk in Microsoft's Overgrown October Patch Tuesday
Microsoft's October 2026 Patch Tuesday fixes 1,413 CVEs, including an exploited Windows Shell zero-day.
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CVE-2026-21413
- CVSS 3.1
- 9.8 critical
- EPSS
- 1%p72
- Published
- ·
- Modified
Description · NVD
A heap-based buffer overflow vulnerability exists in the lossless_jpeg_load_raw functionality of LibRaw Commit 0b56545 and Commit d20315b. A specially crafted malicious file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.
- Vendors
- libraw
- Products
- libraw
- Weakness
- CWE-129, CWE-787
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
In the news
4 storiesMicrosoft Patches Record 1,413 Flaws, Including Exploited Windows Shell Bug
Microsoft patched a record 1,413 flaws, including exploited Windows Shell bug CVE-2026-96951 now on CISA’s KEV list.
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The October 2026 Security Update Review
ZDI's October 2026 review lists dozens of critical Microsoft Office, Azure, Exchange, and Windows flaws.
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