Is CVE-2020-16844 actively exploited?

CVE-2020-16844 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2020-16844?

CVE-2020-16844 has a CVSS score of 6.8 (MEDIUM severity). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N.

How do I patch CVE-2020-16844?

Patch guidance is available from istio security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2020-16844.

Which products are affected by CVE-2020-16844?

2 products: istio istio, istio istio.

CVE-2020-16844 - remediation guidance & executive summary

Description

In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack Vector: network
Complexity: high
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: none
Weaknesses: NVD-CWE-noinfo

Metadata

Primary Vendor: ISTIO
Published: 10/1/2020
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

istio : istioistio : istio

Remediation Guidance

Executive Summary

Cite this page

CVE-2020-16844. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2020-16844

View on NIST NVD

CVE-2020-16844 vulnerability