Auth bypass in Veeam Backup & Replication

CVE-2024-42455

A vulnerability in Veeam Backup & Replication allows a low-privileged user to connect to remoting services and exploit insecure deserialization by sending a serialized temporary file collection. This exploit allows the attacker to delete any file on the system with service account privileges. The vulnerability is caused by an insufficient blacklist during the deserialization process.

Vulnerability class: Broken Authentication

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.152 (96.6th percentile), scored .

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.6% 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-2024-42455: held from 0.152 to 0.152.

EPSS over last 30 days · oldest: 0.152 · newest: 0.152 · change: -0.001

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2024-42455?
CVE-2024-42455 is a high-severity vulnerability in Veeam Backup & Replication, classified under Missing Authentication for Critical Function. CVSS score: 8.1/10. Published 2024-12-04.
How severe is CVE-2024-42455?
High severity. CVSS v3 base score is 8.1 out of 10.