BIND servers are vulnerable if they are running an affected version and are configured to use GSS-TSIG features. In a configuration which uses BIND's default settings the vulnerable code path is not exposed, but a server can be rendered vulnerable by explicitly setting valid values for the tkey-gssapi-keytab or tkey-gssapi-credentialconfiguration options. Although the default configuration is not vulnerable, GSS-TSIG is frequently used in networks where BIND is integrated with Samba, as well as in mixed-server environments that combine BIND servers with Active Directory domain controllers. The most likely outcome of a successful exploitation of the vulnerability is a crash of the named process. However, remote code execution, while unproven, is theoretically possible. Affects: BIND 9.5.0 -> 9.11.27, 9.12.0 -> 9.16.11, and versions BIND 9.11.3-S1 -> 9.11.27-S1 and 9.16.8-S1 -> 9.16.11-S1 of BIND Supported Preview Edition. Also release versions 9.17.0 -> 9.17.1 of the BIND 9.17 development branch
CVE-2020-8625
Score elevated to 8.7 because EPSS predicts 64% probability of exploitation within the next 30 days (top 0.9% of all CVEs). NVD baseline CVSS 8.1 retained for reference. Confidence: see factors.
- High exploitation likelihood — EPSS 64%
A fix is available — apply it.
- CVSS v3
- 8.1
- EG Score
- 8.7(high)
- EG Risk
- 69(Track)EG Risk 69/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity87% × 45%Exploitation64% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS
- 99.1%
- KEV
- Not listed
Published
February 17, 2021
Last Modified
November 21, 2024
References (22)
- security-officer@ischttp://www.openwall.com/lists/oss-security/2021/02/19/1
- security-officer@ischttp://www.openwall.com/lists/oss-security/2021/02/20/2
- security-officer@ischttps://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- security-officer@ischttps://kb.isc.org/v1/docs/cve-2020-8625
- security-officer@ischttps://lists.debian.org/debian-lts-announce/2021/02/msg00029.html
- security-officer@ischttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EBTPWRQWRQEJNWY4NHO4WLS4KLJ3ERHZ/
- security-officer@ischttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KYXAF7G45RXDVNUTWWCI2CVTHRZ67LST/
- security-officer@ischttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QWCMBOSZOJIIET7BWTRYS3HLX5TSDKHX/
- security-officer@ischttps://security.netapp.com/advisory/ntap-20210319-0001/
- security-officer@ischttps://www.debian.org/security/2021/dsa-4857
- security-officer@ischttps://www.zerodayinitiative.com/advisories/ZDI-21-195/
- af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2021/02/19/1
- af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2021/02/20/2
- af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- af854a3a-2127-422b-91ae-364da2661108https://kb.isc.org/v1/docs/cve-2020-8625
Patch Availability(12)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | bind9-host (1:9.9.5.dfsg-3ubuntu0.19+esm4) @ trusty | 2026-05-26 | ubuntu |
| ubuntu | lwresd (1:9.10.3.dfsg.P4-8ubuntu1.18) @ xenial | 2026-05-26 | ubuntu |
| redhat | bind-32:9.11.13-6.el8_2.2 | 2021-03-17 | redhat |
| redhat | bind-32:9.11.4-9.P2.el7_7.4 | 2021-03-04 | redhat |
| redhat | bind-32:9.9.4-74.el7_6.6 | 2021-03-03 | redhat |
| redhat | bind-32:9.9.4-29.el7_2.10 | 2021-03-03 | redhat |
| redhat | bind-32:9.9.4-50.el7_3.5 | 2021-03-03 | redhat |
| redhat | bind-32:9.9.4-51.el7_4.5 | 2021-03-03 | redhat |
| redhat | bind-32:9.11.4-26.P2.el8_1.4 | 2021-03-01 | redhat |
| redhat | bind-32:9.8.2-0.68.rc1.el6_10.10 | 2021-03-01 | redhat |
| redhat | bind-32:9.11.4-26.P2.el7_9.4 | 2021-03-01 | redhat |
| redhat | bind-32:9.11.20-5.el8_3.1 | 2021-03-01 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(13)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
- Microsoft MSRCCVE-2020-86252021-02-27
A vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attack
- Red HatRHSA-2021:0669IMPORTANT2021-02-17
RHSA-2021:0669 — Important
- Red HatRHSA-2021:0670IMPORTANT2021-02-17
RHSA-2021:0670 — Important
- Red HatRHSA-2021:0671IMPORTANT2021-02-17
RHSA-2021:0671 — Important
- Red HatRHSA-2021:0672IMPORTANT2021-02-17
RHSA-2021:0672 — Important
- Red HatRHSA-2021:0691IMPORTANT2021-02-17
RHSA-2021:0691 — Important
- Red HatRHSA-2021:0692IMPORTANT2021-02-17
RHSA-2021:0692 — Important
- Red HatRHSA-2021:0693IMPORTANT2021-02-17
RHSA-2021:0693 — Important
- Red HatRHSA-2021:0694IMPORTANT2021-02-17
RHSA-2021:0694 — Important
- Red HatRHSA-2021:0727IMPORTANT2021-02-17
RHSA-2021:0727 — Important
- Red HatRHSA-2021:0922IMPORTANT2021-02-17
RHSA-2021:0922 — Important
- UbuntuUSN-4737-1MEDIUM
Bind vulnerability
- UbuntuUSN-4737-2MEDIUM
Bind vulnerability
Data Freshness Timeline
(refreshed 8× in last 7d / 31× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-23 14:15 UTCEPSS rescore
- 2026-07-23 01:55 UTCEG score recompute▲ 0.60
- 2026-07-22 22:41 UTCEG score recompute
- 2026-07-22 14:05 UTCEPSS rescore
- 2026-07-20 17:04 UTCEPSS rescore
- 2026-07-20 17:04 UTCEPSS rescore
- 2026-07-19 01:29 UTCOSV refresh
- 2026-07-18 10:02 UTCEPSS rescore
- 2026-07-15 16:55 UTCEPSS rescore
- 2026-07-15 16:55 UTCEPSS rescore
- 2026-07-15 01:57 UTCEPSS rescore
- 2026-07-13 22:27 UTCEPSS rescore
- 2026-07-13 22:27 UTCEPSS rescore
- 2026-07-12 05:44 UTCEPSS rescore
- 2026-07-12 05:44 UTCEPSS rescore
- 2026-07-11 08:25 UTCEPSS rescore
- 2026-07-11 08:25 UTCEPSS rescore
- 2026-07-09 19:07 UTCEPSS rescore
- 2026-07-04 06:29 UTCEPSS rescore
- 2026-07-04 06:29 UTCEPSS rescore
- 2026-07-01 15:03 UTCEPSS rescore
- 2026-07-01 08:18 UTCOSV refresh
- 2026-06-28 14:05 UTCEPSS rescore
- 2026-06-28 04:54 UTCEPSS rescore
- 2026-06-28 04:54 UTCEPSS rescore
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- 2026-06-27 03:06 UTCEPSS rescore
- 2026-06-27 03:06 UTCEPSS rescore
- 2026-06-25 13:48 UTCEPSS rescore
- 2026-06-25 13:48 UTCEPSS rescore
- 2026-06-24 14:03 UTCEPSS rescore
- 2026-06-24 14:03 UTCEPSS rescore
- 2026-06-23 21:31 UTCEPSS rescore
- 2026-06-23 21:31 UTCEPSS rescore
- 2026-06-21 01:57 UTCEPSS rescore
- 2026-06-21 01:57 UTCEPSS rescore
- 2026-06-18 17:51 UTCEPSS rescore
- 2026-06-18 17:50 UTCEPSS rescore
- 2026-06-17 17:50 UTCEPSS rescore
- 2026-06-16 17:50 UTCEPSS rescore
- 2026-06-15 17:46 UTCEPSS rescore
- 2026-06-14 23:15 UTCEPSS rescore
- 2026-06-13 22:58 UTCEPSS rescore
- 2026-06-13 22:58 UTCEPSS rescore
- 2026-06-13 13:43 UTCOSV refresh
- 2026-06-12 23:10 UTCEPSS rescore
- 2026-06-12 23:10 UTCEPSS rescore
- 2026-06-11 13:58 UTCEPSS rescore
- 2026-06-11 13:58 UTCEPSS rescore
- 2026-06-10 22:16 UTCEPSS rescore
- 2026-06-10 13:20 UTCEPSS rescore
- 2026-06-08 14:15 UTCEPSS rescore
- 2026-06-06 13:46 UTCEPSS rescore
- 2026-06-06 13:46 UTCEPSS rescore
- 2026-06-06 13:46 UTCEPSS rescore
- 2026-06-05 22:45 UTCEPSS rescore
- 2026-06-05 22:45 UTCEPSS rescore
- 2026-06-05 06:08 UTCEPSS rescore
- 2026-06-05 06:08 UTCEPSS rescore
- 2026-06-04 13:10 UTCEPSS rescore
- 2026-06-04 13:10 UTCEPSS rescore
- 2026-06-02 20:11 UTCEPSS rescore
- 2026-06-02 20:11 UTCEPSS rescore
- 2026-06-01 13:50 UTCEPSS rescore
- 2026-05-31 22:29 UTCEPSS rescore
- 2026-05-31 22:29 UTCEPSS rescore
- 2026-05-31 00:15 UTCEPSS rescore
- 2026-05-31 00:15 UTCEPSS rescore
- 2026-05-29 13:42 UTCEPSS rescore
- 2026-05-28 13:43 UTCEPSS rescore
- 2026-05-28 13:43 UTCEPSS rescore
- 2026-05-27 13:39 UTCEPSS rescore
- 2026-05-27 13:39 UTCEPSS rescore
- 2026-05-26 20:40 UTCEG score recompute
- 2026-05-26 20:40 UTCVendor advisory
- 2026-05-26 20:40 UTCGHSA enrichment
- 2026-05-26 13:42 UTCEPSS rescore
- 2026-05-26 13:42 UTCEPSS rescore
- 2026-05-25 16:16 UTCOSV refresh
Frequently asked(5)
What is CVE-2020-8625?
When was CVE-2020-8625 disclosed?
Is CVE-2020-8625 actively exploited?
What is the CVSS score of CVE-2020-8625?
How do I remediate CVE-2020-8625?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2020-8625
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