What is CVE-2021-25655?

CVE-2021-25655 is a medium-severity vulnerability in Avaya Aura Experience Portal, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.4/10. Published 2021-06-24.

How severe is CVE-2021-25655?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Open Redirect in Avaya Aura Experience Portal

CVE-2021-25655

A vulnerability in the system Service Menu component of Avaya Aura Experience Portal may allow URL Redirection to any untrusted site through a crafted attack. Affected versions include 7.0 through 7.2.3 (without hotfix) and 8.0.0 (without hotfix).

Vulnerability class: Open Redirect

Published 2021-06-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L.

EPSS exploit prediction

EPSS: 0.004 (29.5th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Avaya Aura Experience Portal — versions 8.0.0
Avaya Experience Portal — versions 8.0, 7.2.3

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

downloads.avaya.com/css/P8/documents/101076234 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-25655?: CVE-2021-25655 is a medium-severity vulnerability in Avaya Aura Experience Portal, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.4/10. Published 2021-06-24.
How severe is CVE-2021-25655?: Medium severity. CVSS v3 base score is 4.4 out of 10.