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Vulnerability details: VCID-4vmm-v15x-mkdr
Vulnerability ID VCID-4vmm-v15x-mkdr
Aliases CVE-2021-34824
Summary istio: istiod propagates user-specified TLS keys and certificates to the secure Istio gateways
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-863 Incorrect Authorization
System Score Found at
cvssv3 9.1 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-34824.json
epss 0.00879 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.00879 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.00879 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.00879 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.00879 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.00879 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.00879 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.00879 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.00879 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.00879 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.00879 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.00879 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.00879 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.00882 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.00882 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.00882 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.00882 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.00882 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.00882 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.0115 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.02185 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.02185 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.02185 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.02185 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.02185 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
epss 0.02185 https://api.first.org/data/v1/epss?cve=CVE-2021-34824
cvssv2 6.5 https://nvd.nist.gov/vuln/detail/CVE-2021-34824
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2021-34824
archlinux Critical https://security.archlinux.org/AVG-2113
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-34824.json
https://api.first.org/data/v1/epss?cve=CVE-2021-34824
https://github.com/istio/istio/releases
https://istio.io/latest/news/security/istio-security-2021-007
1973478 https://bugzilla.redhat.com/show_bug.cgi?id=1973478
ASA-202107-3 https://security.archlinux.org/ASA-202107-3
AVG-2113 https://security.archlinux.org/AVG-2113
cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*
CVE-2021-34824 https://nvd.nist.gov/vuln/detail/CVE-2021-34824
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-34824.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-34824
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-34824
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.74402
EPSS Score 0.00879
Published At Aug. 15, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T10:14:49.769317+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-34824.json 37.0.0