Vulnerability · Published Sep 14, 2026 · Assigned by mitre
CVE-2026-33957
Medium 4.2
In plain English
A medium-severity out-of-bounds write in Exynos 1580 firmware from Samsung. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).
Severity (CVSS 3.1)4.2Medium
Exploit odds (30 days)0.1%top 97.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An issue was discovered in CustOS Driver in Samsung Mobile Processor Exynos 1580. Requesting oversized shared memory from the custos_iwc device enables out-of-bounds read and write, potentially leading to memory corruption or information leakage.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Samsung | Exynos 1580 firmware | 0 – through 2026-01-07 |
Weakness: CWE-787 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:L