Is CVE-2022-48437 in the CISA KEV catalog?

No. CVE-2022-48437 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-48437?

CVE-2022-48437 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2022-48437?

CVE-2022-48437 has an EPSS score of 0.36% (28th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-48437?

Upgrade libressl to 3.6.1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2022-48437

MEDIUM

5.3

CVSS v3

NVD

Description

An issue was discovered in x509/x509_verify.c in LibreSSL before 3.6.1, and in OpenBSD before 7.2 errata 001. x509_verify_ctx_add_chain does not store errors that occur during leaf certificate verification, and therefore an incorrect error is returned. This behavior occurs when there is an installed verification callback that instructs the verifier to continue upon detecting an invalid certificate.

CWE-295Improper Certificate Validation

How to fix

Remediation Available

libresslNVD

Affected:< 3.6.1Fixed in:3.6.1CVE-2022-48437derived from NVD

openbsdNVD

Affected:< 7.2Fixed in:7.2CVE-2022-48437derived from NVD

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

ConfidentialityNone

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.36%probability of exploitation in 30 days

28thpercentile

Low risk: more likely to be exploited than 28% of all known CVEs.

References

Patch3

Related Vulnerabilities

Other CWE-295 (Improper Certificate Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-4000	Low	3.7	100%	-	Fix
CVE-2020-0601	High	8.1	89%	KEV	Fix
CVE-2009-3555	Critical	9.8	87%	-	Fix
CVE-2022-26923	High	8.8	83%	KEV	Fix
CVE-2023-27823	Critical	9.8	53%	-	-
CVE-2022-42979	High	8.8	24%	-	-

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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 2025-02-10.