Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV N L N N U H H H 9.8 .0041 33.0 —
AFFECTED Product Versions Fixed n/a n/a – —
TIMELINE Jun 16 Reserved by mitre Dec 30 Published (CNA: mitre) Sep 30 EXPLOIT PUBLISHED — CVE-2025-50343. Public exploit reference added.
An issue was discovered in matio 1.5.28. A heap-based memory corruption can occur in Mat_VarCreateStruct() when the nfields value does not match the actual number of strings in the fields array. This leads to out-of-bounds reads and invalid memory frees during cleanup, potentially causing a segmentation fault or heap corruption. NOTE: Multiple third-parties note that the available evidence does not demonstrate a vulnerability exploitable through an attacker-controlled input path.
| Date | Event | Detail |
|---|---|---|
| June 16, 2025 | Reserved | Reserved by mitre |
| December 30, 2025 | Published | Published (CNA: mitre) |
| September 30, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2025-50343. Public exploit reference added. |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| n/a | n/a | — | n/a | — |
Authoritative record: CVE-2025-50343 at cve.org
Weaknesses: CWE-122
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-50343 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
