How severe is CVE-2021-41550?

CVE-2021-41550 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-41550 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41550?

CVE-2021-41550 affects Leostream Connection Broker. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-41550?

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

When was CVE-2021-41550 published?

CVE-2021-41550 was published on 2022-01-18 and last updated on 2026-06-17.

CVE-2021-41550

CVE-2021-41550 is a high-severity vulnerability in Leostream Connection Broker with a CVSS 3.x base score of 7.2. 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-434.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 6.5
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Leostream Connection Broker
Published: 2022-01-18
Last modified: 2026-06-17

Description

Leostream Connection Broker 9.0.40.17 allows administrator to upload and execute Perl code.

Frequently asked questions

What is CVE-2021-41550?: Leostream Connection Broker 9.0.40.17 allows administrator to upload and execute Perl code.
How severe is CVE-2021-41550?: CVE-2021-41550 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-41550 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41550?: CVE-2021-41550 affects Leostream Connection Broker. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41550?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-41550 published?: CVE-2021-41550 was published on 2022-01-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:leostream:connection_broker:9.0.40.17:*:*:*:*:*:*:*

More vulnerabilities in Leostream Connection Broker

CVE-2020-26574 — Critical (CVSS 9.6): Leostream Connection Broker 8.2.x is affected by stored XSS. An unauthenticated attacker can inject arbitrary…
CVE-2018-18817 — High (CVSS 7.5): The Leostream Agent before Build 7.0.1.0 when used with Leostream Connection Broker 8.2.72 or earlier allows remote…
CVE-2021-38157 — Medium (CVSS 6.1): LeoStream Connection Broker 9.x before 9.0.34.3 allows Unauthenticated Reflected XSS via the /index.pl user parameter.…
CVE-2021-41551 — Medium (CVSS 4.9): Leostream Connection Broker 9.0.40.17 allows administrators to conduct directory traversal attacks by uploading z ZIP…

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