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CVE mentions, exploit signals, and PoC evidence in one fast public view.

CVE detail

CVE-2026-21667

A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on the Backup Server.

CVSS 9.9 · CriticalBuzz score 21.0

Buzz score

Why this CVE is surfacing

Buzz score total 21.0

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 11.0 · diversity 10.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Mention score
11.0
2 evidence mentions in the snapshot
Diversity score
10.0
2 sources across 2 categories
KEV score
0.0
No KEV entry observed
OTX score
0.0
0 OTX pulses
PoC score
0.0
0 repos · best confidence N/A
Best PoC traction
0
Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions
0
within the 30d window
Peak daily
0
highest bucket

Evidence

Source links by recency

Newest mentions first
2 source links · newest first
  • Veeam warns admins to patch now as critical RCE flaws hit Backup & ReplicationCSO Online

    Backup vendor Veeam has released security updates to patch multiple vulnerabilities in its widely used Backup and Replication platform, including three critical flaws that could allow authenticated users to execute code on backup servers. Detailed in the company’s advisory KB4830, the vulnerabilities affect Veeam Backup & Replication 12.3.2.4165 and earlier version 12 builds, with fixes […]

    newswww.csoonline.comMar 13, 2026, 12:01 PM
  • https://www.veeam.com/kb4830www.veeam.com

    No excerpt available.

    Vendor Advisorywww.veeam.comMar 12, 2026, 3:16 PM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars
No public PoC repositories have been matched yet.

Related records

Similar CVEs

6 related CVEs with shared weakness or product evidence
  • CVE-2026-21666

    A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on the Backup Server.

    CVSS 9.9 · Critical
    2 mentions
  • CVE-2025-48983

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    1 mention
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    1 mention
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