Buffer overflow in Ivanti Avalanche

CVE-2023-32560

An attacker can send a specially crafted message to the Wavelink Avalanche Manager, which could result in service disruption or arbitrary code execution. Thanks to a Researcher at Tenable for finding and reporting. Fixed in version 6.4.1.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.994 (99.9th percentile), scored .

Very high probability of exploitation in the next 30 days — among the top 0.1% most-likely-to-be-exploited CVEs. 100th percentile — 99.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2023-32560: held from 0.994 to 0.994.

EPSS over last 30 days · oldest: 0.994 · newest: 0.994 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-32560?
CVE-2023-32560 is a critical-severity vulnerability in Ivanti Avalanche, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-08-10.
How severe is CVE-2023-32560?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-32560 known to be exploited?
6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.