How severe is CVE-2026-2891?

CVE-2026-2891 has a CVSS 4.0 base score of 8.2, rated high severity.

Is CVE-2026-2891 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-2891?

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-2026-2891 published?

CVE-2026-2891 was published on 2026-07-01 and last updated on 2026-07-02.

CVE-2026-2891

CVE-2026-2891 is a high-severity vulnerability with a CVSS 4.0 base score of 8.2. 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-400.

Key facts

Severity: High (CVSS 4.0 base score 8.2)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Published: 2026-07-01
Last modified: 2026-07-02

Description

The following Poly Voice IP devices, CCX, Trio, and Edge E, might be inoperable if they connect to a malicious SIP server and receive malformed data. HP is releasing updates to mitigate these potential vulnerabilities.

Frequently asked questions

What is CVE-2026-2891?: The following Poly Voice IP devices, CCX, Trio, and Edge E, might be inoperable if they connect to a malicious SIP server and receive malformed data. HP is releasing updates to mitigate these potential vulnerabilities.
How severe is CVE-2026-2891?: CVE-2026-2891 has a CVSS 4.0 base score of 8.2, rated high severity.
Is CVE-2026-2891 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-2891?: 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-2026-2891 published?: CVE-2026-2891 was published on 2026-07-01 and last updated on 2026-07-02.

References

https://support.hp.com/us-en/document/ish_15222895-15222917-16/hpsbpy04096

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