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CVE-2020-8624

19
FAUCET Score

CVE-2020-8624 describes an improper privilege management vulnerability in multiple versions of BIND 9, including those from ISC, Canonical, Debian, Fedora, NetApp, and openSUSE. An authenticated attacker with limited zone content modification privileges could exploit this to alter other, unauthorized parts of the zone. With a CVSS score of 4.3 (Medium), this vulnerability has a low impact on integrity and no impact on confidentiality or availability, requiring low privileges and network access. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 9.9.12, <= 9.9.13CPE matchmatch criteria
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
>= 9.10.7, <= 9.10.8CPE matchmatch criteria
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
>= 9.11.3, <= 9.11.21CPE matchmatch criteria
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
>= 9.12.1, <= 9.16.5CPE matchmatch criteria
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
>= 9.17.0, <= 9.17.3CPE matchmatch criteria
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.67%
Probability of exploitation in next 30 days
EPSS Percentile
88.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0367 is in the 96th percentile among its peer group of 21,977 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (5)

microsoftpatch availablevia msrc
Product: 19172-16820Fixed in: 9.16.3-2
microsoftpatch availablevia msrc
Product: cm1 bind 9.16.3-2 on CBL Mariner 1.0Fixed in: 9.16.3-2
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: bind-32:9.11.4-26.P2.el7_9.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.7 Extended Update SupportFixed in: bind-32:9.11.4-9.P2.el7_7.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: bind-32:9.11.20-5.el8
View patch

Vendor Advisories (2)

redhatCVE-2020-8624Moderate

bind: incorrect enforcement of update-policy rules of type "subdomain"

Aug 20, 2020
microsoft2020-Aug/CVE-2020-8624Moderate

update-policy rules of type "subdomain" are enforced incorrectly

Aug 11, 2020

References

lists.opensuse.org / opensuse-security-announce/2020-10/msg00041.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2020-10/msg00044.html
Mailing ListThird Party Advisory
kb.isc.org / docs/cve-2020-8624
Vendor Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/DQN62GBMCIC5AY4KYADGXNKVY6AJKSJE
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/ZKAMJZXR66P6S5LEU4SN7USSNCWTXEXP
security.gentoo.org / glsa/202008-19
Third Party Advisory
security.netapp.com / advisory/ntap-20200827-0003
Third Party Advisory
usn.ubuntu.com / 4468-1
Third Party Advisory
debian.org / security/2020/dsa-4752
Third Party Advisory
synology.com / security/advisory/Synology_SA_20_19
Third Party Advisory