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UK Cyber Defence
VulnerabilityAwaiting Analysis

CVE-2026-79886

An unauthenticated buffer overflow vulnerability exists in the PAPI protocol of AOS-8.

HIGH 8.2EPSS 0.37%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

An unauthenticated buffer overflow vulnerability exists in the PAPI protocol of AOS-8. Successful exploitation could allow an unauthenticated remote attacker to disrupt the availability of the affected service on the controller, with a limited impact to its integrity.

CVSS 3.1
8.2 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
EPSS
0.37% probability · 30th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Source
security-alert@hpe.com
EPSS trend
0%3%5%23 October 2026: 0.23%27 October 2026: 0.37%23 October 202627 October 2026

EPSS moved from 0.2% on 23 October 2026 to 0.4% on 27 October 2026.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.