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CVE-2026-3549
Published: Mar 19, 2026
Modified: Mar 24, 2026
PUBLISHED
Description
Heap Overflow in TLS 1.3 ECH parsing. An integer underflow existed in ECH extension parsing logic when calculating a buffer length, which resulted in writing beyond the bounds of an allocated buffer. Note that in wolfSSL, ECH is off by default, and the ECH standard is still evolving.
| Vendor | Product | Versions |
|---|---|---|
wofSSL | wolfSSL | affected 0 - < 5.9.0 |
Weaknesses (CWE)
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