CVE-2026-3549 Affecting wolfssl package, versions *


Severity

Recommended
0.0
critical
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.55% (44th percentile)

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  • Snyk IDSNYK-ECHOLATEST-WOLFSSL-17979119
  • published15 Jul 2026
  • disclosed19 Mar 2026

Introduced: 19 Mar 2026

CVE-2026-3549  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest wolfssl.

NVD Description

Note: Versions mentioned in the description apply only to the upstream wolfssl package and not the wolfssl package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1