ABB Ability OPTIMAX Authentication Bypass in Single-Sign On

published 2026-01-16 9 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-2948

cvss: 8.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits: 0; none known

Incorrect Implementation of Authentication Algorithm vulnerability in ABB ABB Ability OPTIMAX.This issue affects ABB Ability OPTIMAX: 6.1, 6.2, from 6.3.0 before 6.3.1-251120, from 6.4.0 before 6.4.1-251120.

Patch / fix

fixed in 1

ABB ABB Ability OPTIMAX 6.3.1-251120, 6.4.1-251120

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-26-120-04 updated 2026-04-30 cvss 8.1

ABB Ability OPTIMAX

ABB Ability OPTIMAX <6.3.1-251120, <6.4.1-251120
affected: vendor fix, mitigation
ABB Ability OPTIMAX 6.3.1-251120, 6.4.1-251120
fixed

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 9 mo ago (2026-01-16)

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA	4.0	9.2	CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA	4.0	9.2	CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

ABB ABB Ability OPTIMAX

Classification

Weakness

CWE-303 Incorrect Implementation of Authentication Algorithm

References

search.abb.com /library/Download.aspx?DocumentID=9AKK108472A1331&LanguageCode=en&DocumentPartId=&Action=Launch

Sources

CVE List CVE-2025-14510
NVD CVE-2025-14510

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.

Summary