How severe is CVE-2021-26705?

CVE-2021-26705 has a CVSS 3.x base score of 9.1, 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 none.

Is CVE-2021-26705 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-26705?

CVE-2021-26705 affects Squarebox Catdv. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-26705?

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-2021-26705 published?

CVE-2021-26705 was published on 2021-03-05 and last updated on 2026-06-17.

CVE-2021-26705

CVE-2021-26705 is a critical-severity vulnerability in Squarebox Catdv with a CVSS 3.x base score of 9.1. 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-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 6.4
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Squarebox Catdv
Published: 2021-03-05
Last modified: 2026-06-17

Description

An issue was discovered in SquareBox CatDV Server through 9.2. An attacker can invoke sensitive RMI methods such as getConnections without authentication, the results of which can be used to generate valid authentication tokens. These tokens can then be used to invoke administrative tasks within the application, such as disclosing password hashes.

Frequently asked questions

What is CVE-2021-26705?: An issue was discovered in SquareBox CatDV Server through 9.2. An attacker can invoke sensitive RMI methods such as getConnections without authentication, the results of which can be used to generate valid authentication tokens. These tokens can then be used to invoke administrative tasks within the application, such as disclosing password hashes.
How severe is CVE-2021-26705?: CVE-2021-26705 has a CVSS 3.x base score of 9.1, 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 none.
Is CVE-2021-26705 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-26705?: CVE-2021-26705 affects Squarebox Catdv. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-26705?: 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-2021-26705 published?: CVE-2021-26705 was published on 2021-03-05 and last updated on 2026-06-17.

References

https://www.exploit-db.com/exploits/49621

Affected products (1)

cpe:2.3:a:squarebox:catdv:*:*:*:*:*:*:*:*

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