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CVE-2021-20179

26
FAUCET Score

CVE-2021-20179 is a high-severity flaw in pki-core, affecting dogtagpki, fedoraproject, and redhat products. An authenticated attacker can exploit this vulnerability to repeatedly renew a compromised certificate, bypassing revocation and impacting data confidentiality and integrity. With a CVSS score of 8.1 (High), this network-exploitable flaw requires low privileges and has a high impact on confidentiality and integrity. There is currently no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 10.5.0CPE matchmatch criteria
cpe:2.3:a:dogtagpki:dogtagpki:*:*:*:*:*:*:*:*
>= 10.5.1, < 10.8.0CPE matchmatch criteria
cpe:2.3:a:dogtagpki:dogtagpki:*:*:*:*:*:*:*:*
>= 10.8.1, < 10.9.0CPE matchmatch criteria
cpe:2.3:a:dogtagpki:dogtagpki:*:*:*:*:*:*:*:*
>= 10.9.1, < 10.10.0CPE matchmatch criteria
cpe:2.3:a:dogtagpki:dogtagpki:*:*:*:*:*:*:*:*
>= 10.10.1, < 10.11.0CPE matchmatch criteria
cpe:2.3:a:dogtagpki:dogtagpki:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.19%
Probability of exploitation in next 30 days
EPSS Percentile
64.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0119 is in the 61st percentile among its peer group of 17,822 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (9)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: pki-core-0:10.5.18-12.el7_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.6 Extended Update SupportFixed in: pki-core-0:10.5.9-15.el7_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.7 Extended Update SupportFixed in: pki-core-0:10.5.16-7.el7_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: pki-core:10.6-8030020210315205745.e0223e2d
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.2 Extended Update SupportFixed in: pki-core:10.6-8020020210330222148.bbc64e6e
View patch
redhatpatch availablevia nvd_reference
View patch
ubuntupatch availablevia ubuntu_usn
Product: dogtag-pki (bionic)Fixed in: 10.6.0-1ubuntu2+esm1
ubuntupatch availablevia ubuntu_usn
Product: dogtag-pki (focal)Fixed in: 10.8.3-1ubuntu1+esm1

Vendor Advisories (2)

ubuntuUSN-8158-1

Dogtag PKI vulnerability

Apr 8, 2026
redhatCVE-2021-20179Important

pki-core: Unprivileged users can renew any certificate

Mar 12, 2021

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
github.com / dogtagpki/pki/pull/3474
PatchThird Party Advisory
github.com / dogtagpki/pki/pull/3475
PatchThird Party Advisory
github.com / dogtagpki/pki/pull/3476
PatchThird Party Advisory
github.com / dogtagpki/pki/pull/3477
PatchThird Party Advisory
github.com / dogtagpki/pki/pull/3478
PatchThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/DDOLFOLEIV7I4EUC3SCZBXL6E2ER7ZEN
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/HRE44N6P24AEDKRMWK7RPRLMCUUBRJII
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/R3I7BRAHLE2WWSY76W3CKFCF5WSSAE24