What is CVE-2024-37377?

CVE-2024-37377 is a high-severity vulnerability in Ivanti Connect Secure, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2024-12-12.

How severe is CVE-2024-37377?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Ivanti Connect Secure

CVE-2024-37377

A heap-based buffer overflow in IPsec of Ivanti Connect Secure before version 22.7R2.3 allows a remote unauthenticated attacker to cause a denial of service.

Vulnerability class: Buffer Overflow

Published 2024-12-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.018 (77.7th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.018 · change: +0.001

Affected products

Ivanti Connect Secure — versions 22.7R2.3
Ivanti Connect Secure — versions 22.7
Ivanti Policy Secure — versions 22.7

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

forums.ivanti.com/s/article/December-2024-Security-Advisory-Ivanti-Connect-Secu… (Vendor Advisory)

Frequently asked questions

What is CVE-2024-37377?: CVE-2024-37377 is a high-severity vulnerability in Ivanti Connect Secure, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2024-12-12.
How severe is CVE-2024-37377?: High severity. CVSS v3 base score is 7.5 out of 10.