CVE-2023-38549

A vulnerability in Veeam ONE allows an unprivileged user who has access to the Veeam ONE Web Client the ability to acquire the NTLM hash of the account used by the Veeam ONE Reporting Service. Note: The criticality of this vulnerability is reduced as it requires interaction by a user with the Veeam ONE Administrator role.

Published: 2023-11-07 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-38549 is rated Moderate Risk (60.5/100): CVSS Medium severity, with high exploitation likelihood (EPSS 19.12%, 97th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +17.51% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-38549

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.61% 19.12% +17.51%
2 2026-03-04 1.41% 1.61% +0.20%
3 2026-03-01 — 1.41% —

Full EPSS history (41 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-38549

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.4 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.3 2.7 [email protected]
4.5 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 0.9 3.6 [email protected]

Weakness enumeration for CVE-2023-38549

Affected software / configurations for CVE-2023-38549

Vendor Product Version Raw CPE
veeam one 11.0.0.1379 cpe:2.3:a:veeam:one:11.0.0.1379:*:*:*:*:*:*:*
veeam one 11.0.1.1880 cpe:2.3:a:veeam:one:11.0.1.1880:*:*:*:*:*:*:*
veeam one 12.0.0.2498 cpe:2.3:a:veeam:one:12.0.0.2498:*:*:*:*:*:*:*
veeam one 12.0.1.2591 cpe:2.3:a:veeam:one:12.0.1.2591:*:*:*:*:*:*:*

References for CVE-2023-38549

URL Tags
https://www.veeam.com/kb4508 Patch Vendor Advisory
cvelogic Threat Intelligence