How severe is CVE-2021-22507?

CVE-2021-22507 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-22507 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22507?

CVE-2021-22507 primarily affects Microfocus Operations Bridge Manager. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-22507?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-22507 published?

CVE-2021-22507 was published on 2021-04-08 and last updated on 2026-06-17.

CVE-2021-22507

CVE-2021-22507 is a critical-severity vulnerability in Microfocus Operations Bridge Manager with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Microfocus Operations Bridge Manager
Published: 2021-04-08
Last modified: 2026-06-17

Description

Authentication bypass vulnerability in Micro Focus Operations Bridge Manager affects versions 2019.05, 2019.11, 2020.05 and 2020.10. The vulnerability could allow remote attackers to bypass user authentication and get unauthorized access.

Frequently asked questions

What is CVE-2021-22507?: Authentication bypass vulnerability in Micro Focus Operations Bridge Manager affects versions 2019.05, 2019.11, 2020.05 and 2020.10. The vulnerability could allow remote attackers to bypass user authentication and get unauthorized access.
How severe is CVE-2021-22507?: CVE-2021-22507 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-22507 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22507?: CVE-2021-22507 primarily affects Microfocus Operations Bridge Manager. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-22507?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-22507 published?: CVE-2021-22507 was published on 2021-04-08 and last updated on 2026-06-17.

References

https://softwaresupport.softwaregrp.com/doc/KM03793283

Affected products (4)

cpe:2.3:a:microfocus:operations_bridge_manager:2019.05:*:*:*:*:*:*:*
cpe:2.3:a:microfocus:operations_bridge_manager:2019.11:*:*:*:*:*:*:*
cpe:2.3:a:microfocus:operations_bridge_manager:2020.05:*:*:*:*:*:*:*
cpe:2.3:a:microfocus:operations_bridge_manager:2020.10:*:*:*:*:*:*:*

More vulnerabilities in Microfocus Operations Bridge Manager

CVE-2021-22504 — Critical (CVSS 9.8): Arbitrary code execution vulnerability on Micro Focus Operations Bridge Manager product, affecting versions 10.1x,…
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Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
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