CVE-2021-37155

CRITICAL
9.8
CVSS Score
Published: July 21, 2021 at 01:43 PM UTC
Updated: June 17, 2026 at 04:00 AM UTC
1 product affected across 1 vendorwolfSSL

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Severity
CRITICAL9.8
Exploit prediction
EPSS 1%

Description

wolfSSL 4.6.x through 4.7.x before 4.8.0 does not produce a failure outcome when the serial number in an OCSP request differs from the serial number in the OCSP response.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.6.0 ≤ v < 4.8.0
Affected range stops below 4.8.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

x_refsource_MISCPatchThird Party Advisory
https://github.com/wolfSSL/wolfssl/pull/3990
x_refsource_MISCRelease NotesThird Party Advisory
https://github.com/wolfSSL/wolfssl/releases/tag/v4.8.0-stable

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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