Is CVE-2026-11877 in the CISA KEV catalog?

No. CVE-2026-11877 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-11877?

CVE-2026-11877 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2026-11877?

CVE-2026-11877 has an EPSS score of 0.18% (8th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-11877?

Upgrade access manager to 5.1 or later.

CVE & CISA-KEV Catalog

CVE-2026-11877

HIGH

7.5

CVSS v3

NVD

Description

An unauthorized user can modify configuration through API calls that affects the OpenText Access Manager. This issue affects Access Manager before 5.1.3.

CWE-648

How to fix

Remediation Available

access managerNVD

Affected:>= 5.0, < 5.1Fixed in:5.1CVE-2026-11877derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploit Intelligence

0.18%probability of exploitation in 30 days

8thpercentile

Low risk: more likely to be exploited than 8% of all known CVEs.

References

Vendor Advisory1

portal.microfocus.com

Related Vulnerabilities

Other CWE-648 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-14813	Critical	9.8	11%	-	Fix
CVE-2024-8785	Critical	9.8	9.7%	-	Fix
CVE-2026-20122	Medium	5.4	7.0%	KEV	Fix
CVE-2025-54766	Medium	5.3	6.9%	-	-
CVE-2025-54765	Medium	5.3	6.9%	-	-
CVE-2025-54767	Medium	6.5	5.3%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-29.