wolfssl: The PKCS#7 decode path ignores the caller-supplied output buffer size (outputSz), allowing decoded content to be writ...
CVE-2026-6681 is fixed in wolfssl on 1 platform, first by DEBIAN-CVE-2026-6681, released July 18, 2026. It is not reported as exploited. Patch Radar priority: Routine.
The PKCS#7 decode path ignores the caller-supplied output buffer size (outputSz), allowing decoded content to be written past the bounds of the provided buffer. This affects wolfSSL 5.9.0 and earlier and was fixed in the 5.9.1 release.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| wolfssl · Debian 12.15 (bookworm) | 5.5.4-2+deb12u3 | DEBIAN-CVE-2026-6681 | Jul 18, 2026 |
| wolfssl · Debian 13.5 (trixie) | 5.7.2-0.1+deb13u2 | DEBIAN-CVE-2026-6681 | Jul 18, 2026 |
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