How severe is CVE-2023-41999?

CVE-2023-41999 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-2023-41999 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-41999?

CVE-2023-41999 affects Arcserve Udp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-41999?

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-2023-41999 published?

CVE-2023-41999 was published on 2023-11-27 and last updated on 2026-06-17.

CVE-2023-41999

CVE-2023-41999 is a critical-severity vulnerability in Arcserve Udp 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)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Arcserve Udp
Published: 2023-11-27
Last modified: 2026-06-17

Description

An authentication bypass exists in Arcserve UDP prior to version 9.2. An unauthenticated, remote attacker can obtain a valid authentication identifier that allows them to authenticate to the management console and perform tasks that require authentication.

Frequently asked questions

What is CVE-2023-41999?: An authentication bypass exists in Arcserve UDP prior to version 9.2. An unauthenticated, remote attacker can obtain a valid authentication identifier that allows them to authenticate to the management console and perform tasks that require authentication.
How severe is CVE-2023-41999?: CVE-2023-41999 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-2023-41999 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-41999?: CVE-2023-41999 affects Arcserve Udp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-41999?: 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-2023-41999 published?: CVE-2023-41999 was published on 2023-11-27 and last updated on 2026-06-17.

References

https://www.tenable.com/security/research/tra-2023-37

Affected products (1)

cpe:2.3:a:arcserve:udp:*:*:*:*:*:*:*:*

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Other CWE-287 (Improper Authentication) vulnerabilities

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