Is CVE-2023-53159 in the CISA KEV catalog?

No. CVE-2023-53159 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-53159?

CVE-2023-53159 has a CVSS v3 base score of 4.5 (MEDIUM).

What is the EPSS score for CVE-2023-53159?

CVE-2023-53159 has an EPSS score of 0.33% (25th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-53159?

Upgrade rust-openssl on debian 13 to 0.10.57-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2023-53159

MEDIUM

4.5

CVSS v3

NVD

Description

The openssl crate before 0.10.55 for Rust allows an out-of-bounds read via an empty string to X509VerifyParamRef::set_host.

CWE-126Buffer Over-read

How to fix

Remediation Available

rust-opensslDebian

Fixed in:0.10.57-1CVE-2023-53159

librust-openssl-devUbuntu

Fixed in:0.10.23-1ubuntu0.1~esm1USN-7891-1

Fixed in:0.10.36-1ubuntu0.1~esm1USN-7891-1

Fixed in:0.10.57-1ubuntu0.1~esm1USN-7891-1

rust-opensslUbuntu

Fixed in:0.10.23-1ubuntu0.1~esm1USN-7891-1

Fixed in:0.10.36-1ubuntu0.1~esm1USN-7891-1

Fixed in:0.10.57-1ubuntu0.1~esm1USN-7891-1

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 VectorLocal

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityLow

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

Exploit Intelligence

0.33%probability of exploitation in 30 days

25thpercentile

Low risk: more likely to be exploited than 25% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory1

rustsec.org

Product1

crates.io

Related Vulnerabilities

Other CWE-126 (Buffer Over-read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2017-7668	High	7.5	57%	-	Fix
CVE-2009-2495	Medium	6.5	42%	-	-
CVE-2017-7679	Critical	9.8	39%	-	Fix
CVE-2025-21277	High	7.5	38%	-	Fix
CVE-2024-38071	High	7.5	36%	-	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 2025-08-07.