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Vulnerability record · CVE-2021-34824 · published 29 June 2021

CVE-2021-34824: Istio vulnerability

Istio · Istio

Istio (1.8.x, 1.9.0-1.9.5 and 1.10.0-1.10.1) contains a remotely exploitable vulnerability where credentials specified in the Gateway and DestinationRule credentialName field can be accessed from different namespaces.

8.8 CVSS 3.1 High EPSS 2.0% · top 20.2%
8.8CVSS 3.1 base score, v2 6.5
2.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

Istio (1.8.x, 1.9.0-1.9.5 and 1.10.0-1.10.1) contains a remotely exploitable vulnerability where credentials specified in the Gateway and DestinationRule credentialName field can be accessed from different namespaces.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/istio/istio/releases Release NotesThird Party Advisory
https://istio.io/latest/news/security/istio-security-2021-007 Vendor Advisory
https://github.com/istio/istio/releases Release NotesThird Party Advisory
https://istio.io/latest/news/security/istio-security-2021-007 Vendor Advisory

Track CVE-2021-34824 inside VULONE

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-34824), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.