THREATPORT/VULNERABILITY/CVE-2024-42455
HIGH SEVERITY

CVE-2024-42455

Veeam Backup \& Replication vulnerability

CVSS
8.1
EPSS
15.1%
EPSS pct
96th
Exploited
No known
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.
Affected vendor
Veeam
Affected product
Veeam Backup \& Replication
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Weakness type (CWE)
  • CWE-306 — Missing Authentication for Critical Function
Published
2024-12-04

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to high impact to integrity, high impact to availability.

Its EPSS score of 15.1% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2024-42455

  • Confirm whether Veeam Veeam Backup \& Replication is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2024-42455.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2024-42455

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2024-42455 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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