SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-21983

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…

MEDIUM 6.5EPSS 68.8%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 68.8%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

Description

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.

CVSS 3.1
6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
EPSS
68.77% probability · 99th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
vmware/cloud foundation · vmware/vrealize operations manager · vmware/vrealize suite lifecycle manager
Source
security@vmware.com
EPSS trend
0%35%70%3 November 2026: 68.77%3 November 20263 November 2026

EPSS 68.8% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.