CVE detail
CVE-2026-5450
Calling the scanf family of functions with a %mc (malloc'd character match) in the GNU C Library version 2.7 to version 2.43 with a format width specifier with an explicit width greater than 1024 could result in a one byte heap buffer overflow.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 16.1 · diversity 20.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
4 source links · newest first
- CVE-2026-5450 scanf %mc off-by-one heap buffer overflowMicrosoft MSRC
Information published.
vendormsrc.microsoft.comJun 3, 2026, 8:40 AM - https://cert-portal.siemens.com/productcert/html/ssa-082556.htmlcert-portal.siemens.com
No excerpt available.
Vendor Advisorycert-portal.siemens.comApr 20, 2026, 9:16 PM No excerpt available.
Exploitsourceware.orgApr 20, 2026, 9:16 PM- https://inbox.sourceware.org/libc-announce/[email protected]/T/#uinbox.sourceware.org
No excerpt available.
Third Party Advisoryinbox.sourceware.orgApr 20, 2026, 9:16 PM
Exploit code
Public exploit repository references
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0 repository references · best confidence N/A · max 0 stars
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