The IBM FlashSystem 900 user management GUI is vulnerable to stored cross-site scripting in code versions 1.5.2.8 and prior and 1.6.1.2 and…

published 2021-05-04 5y ago modified 2026-06-17 4mo ago also EUVD-2020-26234

cvss: 6.4; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 42%
public exploits: 0; none known

The IBM FlashSystem 900 user management GUI is vulnerable to stored cross-site scripting in code versions 1.5.2.8 and prior and 1.6.1.2 and prior. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.

Patch / fix

fixed in 1

ibm flashsystem_900_firmware 1.5.2.9, 1.6.1.3

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Exploit prediction

0.50% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.0	6.4	CVSS:3.0/A:N/UI:N/S:C/AC:L/I:L/PR:L/AV:N/C:L/RL:O/RC:C/E:H
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CNA	3.0	6.4	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
NVD	2.0	3.5	AV:N/AC:M/Au:S/C:N/I:P/A:N

Affected products

IBM FlashSystem 900

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

ibm.com /support/pages/node/6449280
vendor-advisory
exchange.xforce.ibmcloud.com /vulnerabilities/192702
vdb-entry, vendor-advisory

Sources

CVE List CVE-2020-4987
NVD CVE-2020-4987

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