CVE-2026-79870
CRITICAL
Published Oct 22, 2026
Modified Oct 26, 2026
Description
An authentication bypass vulnerability in the PAPI protocol of AOS-8 could allow an unauthenticated adjacent attacker to circumvent existing authentication controls. Successful exploitation could allow an attacker to gain administrative access, modify system configurations, access or manipulate sensitive data, and disrupt network operations.
Is your site exposed to CVE-2026-79870?
Run a free security scan — no signup, results in seconds.
CVSS v3.1 Score
9.6
CRITICAL
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS — Exploit Prediction
0.0027
Probability of exploitation
0.19%
Percentile rank
EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.
References
Frequently Asked Questions
What is CVE-2026-79870? +
An authentication bypass vulnerability in the PAPI protocol of AOS-8 could allow an unauthenticated adjacent attacker to circumvent existing authentication controls. Successful exploitation could allow an attacker to gain administrative access, modify system configurations, access or manipulate sensitive data, and disrupt network operations. It has a CVSS v3.1 base score of 9.6 (CRITICAL).
How severe is CVE-2026-79870? +
CVE-2026-79870 has a CVSS v3.1 score of 9.6 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0027, placing it in the 0th percentile for exploitation probability.
How do I check if I'm vulnerable to CVE-2026-79870? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.