SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-1499

A vulnerability in the web-based management interface of Cisco HyperFlex HX Data Platform could allow an unauthenticated, remote attacker to upload files to an affected device.

MEDIUM 5.3EPSS 80.4%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 80.4%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.

Description

A vulnerability in the web-based management interface of Cisco HyperFlex HX Data Platform could allow an unauthenticated, remote attacker to upload files to an affected device. This vulnerability is due to missing authentication for the upload function. An attacker could exploit this vulnerability by sending a specific HTTP request to an affected device. A successful exploit could allow the attacker to upload files to the affected device with the permissions of the tomcat8 user.

CVSS 3.1
5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS
80.43% probability · 100th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-306
Affected
cisco/hyperflex hx data platform
Source
psirt@cisco.com
EPSS trend
0%43%85%3 November 2026: 80.43%3 November 20263 November 2026

EPSS 80.4% 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.

References

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