How to Fix CVE-2026-40449: ONE (Bundle Sibling)
By Sai Kiran Pandrala
Last verified: 2026-05-25
CVE-2026-40449 is a sibling vulnerability in the same vendor advisory as CVE-2026-40448. Applying the patched build named in the primary write-up closes this CVE as well.
| Severity | CVSS 6.6 - Medium |
|---|---|
| Actively exploited? | Not currently in CISA KEV |
| Affected | Same as the bundle - see CVE-2026-40448 |
| Fixed in | Same patched build as CVE-2026-40448 (See vendor advisory) |
| Type (CWE) | CWE-190: CWE-190 Integer overflow or wraparound |
What's different about CVE-2026-40449?
Integer overflow in buffer size calculation could result in out of bounds memory access when handling large tensors in Samsung Open Source ONE.
Affected version is prior to commit 1.30.0.
The technical impact and remediation are identical to the primary CVE in the bundle. The same vendor patch closes both.
How to fix CVE-2026-40449
Apply the patched build per the primary write-up: How to Fix CVE-2026-40448.
The patch installation procedure, verification commands, and interim mitigations are documented there. Reusing one runbook keeps the rollout consistent across the bundle.
Frequently asked questions
Is CVE-2026-40449 fixed by the same patch as CVE-2026-40448?
Yes. CVE-2026-40449 ships in the same vendor advisory as CVE-2026-40448. Applying the patched build named in the primary write-up closes both.
What is the CVSS score for CVE-2026-40449?
The CVSS base score is 6.6 (Medium).
Is it being exploited?
It is not currently listed in CISA KEV.
References
- Official vendor advisory: https://github.com/Samsung/ONE/pull/16481
- NVD entry: https://nvd.nist.gov/vuln/detail/CVE-2026-40449
- CISA KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
- Primary write-up: How to Fix CVE-2026-40448
*Part of the ONE bundle. Full procedure at CVE-2026-40448.*