How severe is CVE-2024-3652?

CVE-2024-3652 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-3652 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-3652?

CVE-2024-3652 affects Libreswan. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-3652?

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

Does CVE-2024-3652 have an EU (EUVD) identifier?

Yes. CVE-2024-3652 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-32230.

When was CVE-2024-3652 published?

CVE-2024-3652 was published on 2024-04-11 and last updated on 2026-06-17.

CVE-2024-3652

CVE-2024-3652 is a medium-severity vulnerability in Libreswan with a CVSS 3.x base score of 6.5. 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-404.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-32230
Weakness: CWE-404
Affected product: Libreswan
Published: 2024-04-11
Last modified: 2026-06-17

Description

The Libreswan Project was notified of an issue causing libreswan to restart when using IKEv1 without specifying an esp= line. When the peer requests AES-GMAC, libreswan's default proposal handler causes an assertion failure and crashes and restarts. IKEv2 connections are not affected.

Frequently asked questions

What is CVE-2024-3652?: The Libreswan Project was notified of an issue causing libreswan to restart when using IKEv1 without specifying an esp= line. When the peer requests AES-GMAC, libreswan's default proposal handler causes an assertion failure and crashes and restarts. IKEv2 connections are not affected.
How severe is CVE-2024-3652?: CVE-2024-3652 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-3652 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-3652?: CVE-2024-3652 affects Libreswan. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-3652?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-3652 have an EU (EUVD) identifier?: Yes. CVE-2024-3652 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-32230.
When was CVE-2024-3652 published?: CVE-2024-3652 was published on 2024-04-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:libreswan:libreswan:*:*:*:*:*:*:*:*

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