How severe is CVE-2023-2593?

CVE-2023-2593 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-2593 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2023-2593?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-2593 have an EU (EUVD) identifier?

Yes. CVE-2023-2593 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-34067.

When was CVE-2023-2593 published?

CVE-2023-2593 was published on 2025-07-30 and last updated on 2026-06-29.

CVE-2023-2593

CVE-2023-2593 is a medium-severity vulnerability with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-835.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-34067
Weakness: CWE-835
Published: 2025-07-30
Last modified: 2026-06-29

Description

A flaw exists within the Linux kernel's handling of new TCP connections. The issue results from the lack of memory release after its effective lifetime. This vulnerability allows an unauthenticated attacker to create a denial of service condition on the system.

Frequently asked questions

What is CVE-2023-2593?: A flaw exists within the Linux kernel's handling of new TCP connections. The issue results from the lack of memory release after its effective lifetime. This vulnerability allows an unauthenticated attacker to create a denial of service condition on the system.
How severe is CVE-2023-2593?: CVE-2023-2593 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-2593 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2023-2593?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-2593 have an EU (EUVD) identifier?: Yes. CVE-2023-2593 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-34067.
When was CVE-2023-2593 published?: CVE-2023-2593 was published on 2025-07-30 and last updated on 2026-06-29.

References

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