CVE-2024-45396
CVE-2024-45396 is a high-severity vulnerability in Dena Quicly with a CVSS 3.x base score of 7.5. 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-617.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- EPSS exploit prediction: 1% (43rd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-41457
- Weakness: CWE-617
- Affected product: Dena Quicly
- Published:
- Last modified:
Description
Quicly is an IETF QUIC protocol implementation. Quicly up to commtit d720707 is susceptible to a denial-of-service attack. A remote attacker can exploit these bugs to trigger an assertion failure that crashes process using quicly. The vulnerability is addressed with commit 2a95896104901589c495bc41460262e64ffcad5c.
Frequently asked questions
- What is CVE-2024-45396?
- Quicly is an IETF QUIC protocol implementation. Quicly up to commtit d720707 is susceptible to a denial-of-service attack. A remote attacker can exploit these bugs to trigger an assertion failure that crashes process using quicly. The vulnerability is addressed with commit 2a95896104901589c495bc41460262e64ffcad5c.
- How severe is CVE-2024-45396?
- CVE-2024-45396 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2024-45396 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2024-45396?
- CVE-2024-45396 affects Dena Quicly. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2024-45396?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2024-45396 have an EU (EUVD) identifier?
- Yes. CVE-2024-45396 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-41457.
- When was CVE-2024-45396 published?
- CVE-2024-45396 was published on 2024-10-11 and last updated on 2026-06-17.
References
- https://github.com/h2o/quicly/commit/2a95896104901589c495bc41460262e64ffcad5c
- https://github.com/h2o/quicly/security/advisories/GHSA-mp3c-h5gg-mm6p
Affected products (1)
- cpe:2.3:a:dena:quicly:*:*:*:*:*:*:*:*
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