Security readout for executives and security teams
Plain-English summary
This flaw lets an unauthenticated network attacker obtain encrypted credentials from Veeam Backup & Replication’s configuration database. Those credentials may enable access to backup infrastructure hosts. Because CISA lists CVE-2023-27532 as known exploited, treat exposed or unpatched Veeam deployments as a business-critical recovery risk.
Executive priority
Prioritize remediation immediately for internet-exposed or broadly reachable Veeam servers. Backup systems are high-value because compromise can undermine recovery during ransomware or destructive incidents. KEV status means this is not theoretical risk.
Technical view
CVE-2023-27532 is a missing-authentication issue in Veeam Backup & Replication, scored CVSS 7.5. The disclosed impact is confidentiality loss: encrypted credentials stored in the configuration database can be obtained remotely without privileges or user interaction. Vendor-listed fixed builds are v12 build 12.0.0.1420 P20230223 and 11a build 11.0.1.1261 P20230227.
Likely exposure
Organizations running Veeam Backup & Replication before the fixed builds are the relevant exposure group. Risk is highest where the Veeam service is network-reachable from untrusted segments or where backup infrastructure credentials have broad administrative reach.
Exploitation context
Active exploitation is supported by CISA KEV listing CVE-2023-27532. The provided sources do not include exploit mechanics, observed attacker names, or campaign details. The key operational concern is theft of stored backup credentials and follow-on access to backup hosts.
Researcher notes
The source bundle identifies CWE-306 and CVSS AV:N/AC:L/PR:N/UI:N with confidentiality impact only. Evidence supports credential retrieval risk, but does not provide protocol details, exploit prerequisites beyond network access, or vendor mitigations beyond fixed builds and KB guidance.
Mitigation direction
- Upgrade Veeam Backup & Replication to a vendor-listed fixed build.
- Review Veeam KB4424 for current vendor guidance before rollout.
- Restrict network access to Veeam management services to trusted administrative paths.
- Review and rotate backup infrastructure credentials after remediation where exposure is plausible.
- Prioritize backup environment monitoring for suspicious authentication activity.
Validation and detection
- Inventory all Veeam Backup & Replication servers and record build versions.
- Confirm v12 is at 12.0.0.1420 P20230223 or later.
- Confirm 11a is at 11.0.1.1261 P20230227 or later.
- Check whether Veeam services are reachable from untrusted networks.
- Review logs for unexpected access to backup infrastructure hosts.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-306: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-27532 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.veeam.com/kb4424CVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27532CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Missing Authentication for Critical Function
Missing Authentication for Critical Function represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.