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CVE-2023-27532

Veeam Backup & Replication Cloud Connect Missing Authentication for Critical Function

7.5 HIGHActively exploited (CISA KEV)Used in ransomwareEPSS 81.3%
  1. Published10 Mar 2023
  2. Added to CISA KEV22 Aug 2023
  3. Remediation due12 Sept 2023
Actively exploited (CISA KEV)

Veeam Backup & Replication Cloud Connect component contains a missing authentication for critical function vulnerability that allows an unauthenticated user operating within the backup infrastructure network perimeter to obtain encrypted credentials stored in the configuration database. This may lead to an attacker gaining access to the backup infrastructure hosts.

Added to KEV: 22 Aug 2023Federal remediation due: 12 Sept 2023Used in ransomware

Description

Vulnerability in Veeam Backup & Replication component allows encrypted credentials stored in the configuration database to be obtained. This may lead to gaining access to the backup infrastructure hosts.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

Veeam Backup & Replication< 11.0.1.1261 · 11.0.1.1261 · 12.0.0.1420

Remediation

Fixed in
Veeam Backup & Replication≥ 11.0.1.1261
Patch & vendor advisories

References

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Frequently asked

Is CVE-2023-27532 being actively exploited?

Yes. CVE-2023-27532 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 22 Aug 2023. It has been used in ransomware campaigns.

How severe is CVE-2023-27532?

CVE-2023-27532 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 81.3% probability of exploitation.

Which products are affected by CVE-2023-27532?

Affected products include Veeam Backup & Replication.

How do I fix CVE-2023-27532?

Upgrade affected software to a fixed version, for example Veeam Backup & Replication 11.0.1.1261 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-27532 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.