How severe is CVE-2018-5261?

CVE-2018-5261 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-5261 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-5261?

CVE-2018-5261 affects Flexense Diskboss. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-5261?

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-2018-5261 published?

CVE-2018-5261 was published on 2018-02-02 and last updated on 2026-06-17.

CVE-2018-5261

CVE-2018-5261 is a high-severity vulnerability in Flexense Diskboss with a CVSS 3.x base score of 8.1. 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-311.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 4.3
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-311
Affected product: Flexense Diskboss
Published: 2018-02-02
Last modified: 2026-06-17

Description

An issue was discovered in Flexense DiskBoss 8.8.16 and earlier. Due to the usage of plaintext information from the handshake as input for the encryption key used for the encryption of the rest of the session, the server and client disclose sensitive information, such as the authentication credentials, to any man-in-the-middle (MiTM) listener.

Frequently asked questions

What is CVE-2018-5261?: An issue was discovered in Flexense DiskBoss 8.8.16 and earlier. Due to the usage of plaintext information from the handshake as input for the encryption key used for the encryption of the rest of the session, the server and client disclose sensitive information, such as the authentication credentials, to any man-in-the-middle (MiTM) listener.
How severe is CVE-2018-5261?: CVE-2018-5261 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-5261 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-5261?: CVE-2018-5261 affects Flexense Diskboss. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-5261?: 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-2018-5261 published?: CVE-2018-5261 was published on 2018-02-02 and last updated on 2026-06-17.

References

https://github.com/bitsadmin/exploits/tree/master/CVE-2018-5261

Affected products (1)

cpe:2.3:a:flexense:diskboss:*:*:*:*:*:*:*:*

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