VulnerabilityModified

CVE-2021-26587

A potential DOM-based Cross Site Scripting security vulnerability has been identified in HPE StoreOnce.

MEDIUM 6.5EPSS 0.50%

Does this matter?

Lower severity and a low EPSS score (0.50%). Track it; it rarely justifies an emergency change on its own.

Description

A potential DOM-based Cross Site Scripting security vulnerability has been identified in HPE StoreOnce. The vulnerability could be remotely exploited to cause an elevation of privilege leading to partial impact to confidentiality, availability, and integrity. HPE has made the following software update - HPE StoreOnce 4.3.0, to resolve the vulnerability in HPE StoreOnce.

CVSS 3.1: 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
EPSS: 0.50% probability · 42th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-79
Affected: hpe/storeonce 5200 firmware · hpe/storeonce 5650 firmware · hpe/storeonce 5250 firmware · hpe/storeonce 3640 firmware · hpe/storeonce 3620 firmware · hpe/storeonce vsa 4tb firmware
Source: security-alert@hpe.com

EPSS trend

EPSS 0.5% since 26 October 2026; no change recorded yet. 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.