No exploitation reportedFix available

CVE-2021-3495

Q: Is CVE-2021-3495 actively exploited?

Active exploitation of CVE-2021-3495 has not been confirmed. Its EPSS score was 1.0% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-3495?

CVE-2021-3495 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2021-06-01
Fixed in1.33.0 · 1.24.7
WeaknessCWE-281

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An incorrect access control flaw was found in the kiali-operator in versions before 1.33.0 and before 1.24.7. This flaw allows an attacker with a basic level of access to the cluster (to deploy a kiali operand) to use this vulnerability and deploy a given image to anywhere in the cluster, potentially gaining access to privileged service account tokens. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Timeline

dates in UTC

2021-06-0114:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-3495?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-3495?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV

Netlify kiali-operator

Branch	Affected	Fixed in	Source
1.x	≥ 1.30.0, < 1.33.0	1.33.0	NVD
1.33	< 1.33.0	1.33.0	OSV
1.24	< 1.24.7	1.24.7	NVD

Redhat openshift service mesh

Branch	Affected	Fixed in	Source
1.0	= 1.0	no fix published	NVD
2.0	= 2.0	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Netlify kiali-operator to 1.33.0 · 1.24.7

Advisories and patches

bugzilla.redhat.comPatch
kiali.ioVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.18.8read 2026-10-23
NVDCVSS 2.06.5read 2026-10-23
CNAweakness (CWE)CWE-281read 2026-10-23
FIRST EPSSEPSS score1.0 %2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: 2021-06-01
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-3495?

Is CVE-2021-3495 actively exploited?

Active exploitation of CVE-2021-3495 has not been confirmed. Its EPSS score was 1.0% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-3495?

CVE-2021-3495 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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