CVE-2023-27532
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
- 7.5Highscored by CISA
- Exploited in the wild
- Yes, in CISA KEV since 22 Aug 2023CISA deadline for US federal agencies: 12 Sept 2023known use in ransomware campaignsunvetted proof-of-concept code on github
- EPSS
- 80.6%chance of exploitation in the next 30 daystop 0.4% of scored CVEsFIRST score of 11 Nov 2026
- Fix
- Patch availablesee the advisories in the references
- Published
- 10 Mar 2023analysed here 12 Nov 2026
Do first. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. (CISA's required action for this KEV entry)
Summary
Triage
The summary, impact and action text on this page are written by our AI analysis pipeline, or taken from the NVD description when a CVE was imported from NVD. They are not the vendor's wording: check them against the sources. A longer AI executive summary and technical analysis are generated for signed-in accounts on the Max plan.
Affected products
| Product | Affected versions | Vendor says fixed in |
|---|---|---|
| Veeam Backup & Replication | Fixed Versions: v12 (build 12.0.0.1420 P20230223)11a (build 11.0.1.1261 P20230227)Vendor says fixed in: not stated |
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.
Products named in our analysis
- veeam:veeam_backup_\&_replication
Fix and mitigation
WAF and other mitigations
Can a WAF block it? No. A function is missing its authentication check. The attack requests look like normal traffic, so a WAF has nothing to match on.
Also consider: patch
Based on the weakness type only; no CVE-specific evidence yet. We check Cloudflare, AWS, Google Cloud Armor and Azure; for Akamai, Imperva, Fastly, F5, ask your vendor.
Remediation steps (AI-written)
Step-by-step remediation is generated for accounts on the Max plan, for CVEs that match a technology in their stack. Add this technology to your stack to see the fix checklist.
Exploitation evidence
- CISA KEV catalog
- Listed since 22 Aug 2023. Known use in ransomware campaigns.
- CISA due date
- 12 Sept 2023, the remediation deadline for US federal agencies
- CISA required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Public exploit code
- Unvetted proof-of-concept code on GitHub: 4 GitHub proofs of concept
- CISA SSVC
- exploitation active, automatable yes, technical impact partialAssessed by CISA 28 Jan 2025 (SSVC 2.0.3). Exploitation is none, poc (public proof of concept) or active.
GitHub proofs of concept
- sfewer-r7/CVE-2023-27532115 stars
- horizon3ai/CVE-2023-2753275 stars
- puckiestyle/CVE-2023-27532-RCE-Only0 stars
- yunus-a1i/veeam-cve-2023-27532-mock0 stars
Listed so you can judge urgency, not as a recommendation to run anything. GitHub “proofs of concept” are unvetted: some are fake or carry malware. Exploit-DB marks the entries its staff verified.
Timeline
- 10 Mar 2023Published
- 18 Mar 2023First proof-of-concept repository on GitHub (unvetted)7 days later
- 22 Aug 2023Added to CISA KEV (exploited in the wild)157 days (about 5 months) later
- 12 Sept 2023CISA remediation due date (US federal agencies)21 days later
- 28 Jan 2025CISA SSVC assessment: exploitation active505 days (about 1 year) later
- 21 Oct 2025CVE record last updated266 days (about 9 months) later
- 12 Nov 2026Analysed by vulneraibility.com387 days (about 1 year) later
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
| Metric | Value | What it means |
|---|---|---|
| Attack vector | NetworkReachable over the internet or any routable network. | Reachable over the internet or any routable network. |
| Attack complexity | LowRepeatable attack, no special conditions. | Repeatable attack, no special conditions. |
| Privileges required | NoneThe attacker needs no prior access. | The attacker needs no prior access. |
| User interaction | NoneNo victim action needed. | No victim action needed. |
| Scope | UnchangedImpact stays within the vulnerable component. | Impact stays within the vulnerable component. |
| Confidentiality | HighTotal data disclosure possible. | Total data disclosure possible. |
| Integrity | NoneNo unauthorised modification. | No unauthorised modification. |
| Availability | NoneThe service stays up. | The service stays up. |
Common questions
Is CVE-2023-27532 being exploited?
Yes. CVE-2023-27532 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.
How severe is CVE-2023-27532?
CVE-2023-27532 is rated High with a CVSS score of 7.5. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2023-27532?
Yes. A fix has been recorded for CVE-2023-27532. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2023-27532 affect?
CVE-2023-27532 affects veeam:veeam_backup_\&_replication. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
References
Where the data on this page comes from
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- CISA KEV catalog: exploitation, date added, due date
- CISA Vulnrichment (ADP): SSVC decision points
- FIRST EPSS: exploit probability and percentile
- PoC-in-GitHub: GitHub repositories that claim a proof of concept
Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.
Similar CVEs
Get CVEs like this by email. Join the free digest: the CVEs we flag as major, all CVSS 8.0 or higher, in up to three emails a day (sent at 05:00, 11:00 and 15:00 UTC). Matching alerts to the products you run needs an account, and accounts are invite-only during the beta.