Is CVE-2022-42905 in the CISA KEV catalog?

No. CVE-2022-42905 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-42905?

CVE-2022-42905 has a CVSS v3 base score of 9.1 (CRITICAL).

What is the EPSS score for CVE-2022-42905?

CVE-2022-42905 has an EPSS score of 1.96% (78th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-42905?

Upgrade wolfssl on debian 11 to 4.6.0+p1-0+deb11u2 or later.

CVE & CISA-KEV Catalog

CVE-2022-42905

CRITICALEPSS 78th pctl

9.1

CVSS v3

NVD

Description

In wolfSSL before 5.5.2, if callback functions are enabled (via the WOLFSSL_CALLBACKS flag), then a malicious TLS 1.3 client or network attacker can trigger a buffer over-read on the heap of 5 bytes. (WOLFSSL_CALLBACKS is only intended for debugging.)

CWE-125Out-of-bounds Read

How to fix

Remediation Available

wolfsslDebian

Fixed in:4.6.0+p1-0+deb11u2CVE-2022-42905

Fixed in:5.5.3-1CVE-2022-42905

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Exploit Intelligence

1.96%probability of exploitation in 30 days

78thpercentile

Elevated risk: more likely to be exploited than 78% of all known CVEs.

References

Vendor Advisory1

wolfssl.com

Third-Party Advisory4

Other references1

blog.trailofbits.com

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2023-21769	High	7.5	92%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2020-8794	Critical	9.8	89%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-05-02.