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Fencer Vulns
medium 6.5

CVE-2021-21983 in the critical feed json

Arbitrary file write vulnerability in vRealize Operations Manager API (CVE-2021-21983) prior to 8.4 may allow an authenticated malicious ac…

published 2021-03-31 5 y ago modified 2026-08-12 2 mo ago also EUVD-2021-9154

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
68.8%
EPSS 68.8% chance of exploitation in 30 days, percentile 99.3%
public exploits
1
Metasploit

Summary

Arbitrary file write vulnerability in vRealize Operations Manager API (CVE-2021-21983) prior to 8.4 may allow an authenticated malicious actor with network access to the vRealize Operations Manager API can write files to arbitrary locations on the underlying photon operating system.

Timeline

  1. First public exploit (Metasploit exploit/linux/http/vmware_vrops_mgr_ssrf_rce)
  2. CISA SSVC: exploitation active
  3. Published

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
yes
Technical impact
total
Assessed
5 y ago

Exploit prediction

68.77% chance of exploitation in the next 30 days, higher than 99.3% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
NVD 2.0 8.5 AV:N/AC:L/Au:S/C:N/I:C/A:C

Affected products

  • n/a VMware vRealize Operations

Classification

Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.