Is CVE-2023-42459 in the CISA KEV catalog?

No. CVE-2023-42459 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-42459?

CVE-2023-42459 has a CVSS v3 base score of 8.6 (HIGH).

What is the EPSS score for CVE-2023-42459?

CVE-2023-42459 has an EPSS score of 0.83% (53th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-42459?

Upgrade fastdds on debian 12 to 2.9.1+ds-1+deb12u2 or later.

CVE & CISA-KEV Catalog

CVE-2023-42459

HIGH

8.6

CVSS v3

NVD

Description

Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group). In affected versions specific DATA submessages can be sent to a discovery locator which may trigger a free error. This can remotely crash any Fast-DDS process. The call to free() could potentially leave the pointer in the attackers control which could lead to a double free. This issue has been addressed in versions 2.12.0, 2.11.3, 2.10.3, and 2.6.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CWE-415 CWE-416Use After Free CWE-590

How to fix

Remediation Available

fastddsDebian

Fixed in:2.9.1+ds-1+deb12u2CVE-2023-42459

Fixed in:2.11.2+ds-6CVE-2023-42459

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

ConfidentialityLow

IntegrityLow

AvailabilityHigh

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

Exploit Intelligence

0.83%probability of exploitation in 30 days

53rdpercentile

Moderate risk: more likely to be exploited than 53% of all known CVEs.

References

Patch1

github.com

Exploit1

github.com

Vendor Advisory1

github.com

Mailing List1

debian.org

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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 2025-04-11.