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CVE-2026-33957
An issue was discovered in CustOS Driver in Samsung Mobile Processor Exynos 1580. Requesting oversized shared memory from the custos_iwc…
Medium4.2EPSS 0.13%
- Published
- Updated
- Reserved
- Assigned by
- mitre
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.
Timeline
ID reserved
By mitre
- 6 months later
· 6 months later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| mitreCNA (assigner) | 3.1 | Medium4.2 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:L |
| NVDNVD · Awaiting Analysis | 3.1 | Medium4.2 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:L |
- EPSS (exploitation in 30 days)
- 0.13% · top 98% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.2.
Weakness
Affected products
Samsung · Exynos 1580 firmware
- affected ≤ 2026-01-07
References (2)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-33957)Record last updated .