The Samba AD DC includes checks when adding service principals names (SPNs) to an account to ensure that SPNs do not alias with those already in the database. Some of these checks are able to be bypassed if an account modification re-adds an SPN that was previously present on that account, such as one added when a computer is joined to a domain. An attacker who has the ability to write to an account can exploit this to perform a denial-of-service attack by adding an SPN that matches an existing service. Additionally, an attacker who can intercept traffic can impersonate existing services, resulting in a loss of confidentiality and integrity.
CVE-2022-0336
“—” beside the score: it is equal to NVD's CVSS score.
Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2022-08-29. NVD baseline CVSS 8.8; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 8.8
- EG Score
- 8.8HIGHmedium confidence
- EG Risk
- 40EG Risk 40/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity88% × 45%Impact severity (EG Severity): CVSS 8.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation1.7% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 1.8%
- EPSS %ILE
- 77th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (8.8): severity, escalated by confirmed exploitation. This CVE's 8.8 is its impact severity (EG Severity), not escalated.
- EG Severity
- 8.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 1.8% within 30 daysSource: FIRST EPSS. FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines.
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
August 29, 2022
Last Modified
November 21, 2024
Advisory Details (7)
Auto-updated Aug 30, 202614950 – (CVE-2022-0336) CVE-2022-0336 [SECURITY] Re-adding an SPN skips subsequent SPN conflict checks
https://bugzilla.samba.org/show_bug.cgi?id=149502046134 – (CVE-2022-0336) CVE-2022-0336 samba: Samba AD users with permission to write to an account can impersonate arbitrary services
https://bugzilla.redhat.com/show_bug.cgi?id=2046134CVE-2022-0336 - Red Hat Customer Portal
Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a
https://access.redhat.com/security/cve/CVE-2022-0336Samba - Security Announcement Archive
https://www.samba.org/samba/security/CVE-2022-0336.htmlSamba: Multiple Vulnerabilities (GLSA 202309-06) — Gentoo security
https://security.gentoo.org/glsa/202309-06commit c58ede44f382 (samba-team/samba)
Fix landed in samba-team/samba commit c58ede44f382 — awaiting tagged release
https://github.com/samba-team/samba/commit/c58ede44f382bd0125f761f0479c8d48156be400commit 1a5dc817c0c9 (samba-team/samba)
Fix landed in samba-team/samba commit 1a5dc817c0c9 — awaiting tagged release
https://github.com/samba-team/samba/commit/1a5dc817c0c9379bbaab14c676681b42b0039a3cVendor Advisories for CVE-2022-0336(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(1)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| ubuntu | python3-samba (2:4.13.17~dfsg-0ubuntu0.21.10.1) @ impish | 2026-10-21 | ubuntu |
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.
Affected Packages
(6 across 6 ecosystems)
Alpine:v3.15(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| samba | — |
| — |
Alpine:v3.16(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| samba | — |
| — |
Debian:11(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| samba | 2:4.13.13+dfsg-1~deb11u1, 2:4.13.13+dfsg-1~deb11u2, 2:4.13.5+dfsg-2 |
| — |
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| samba | — |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| samba | — |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| samba | — |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(1)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
Data Freshness Timeline
(refreshed 11× in last 7d / 37× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 96 of 197 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 4 repeat rows among the latest 100 are merged into the row they repeat. The 101 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-10-23 16:28 UTCEPSS rescoreEPSS 1.8% · 77th percentile
- 2026-10-22 16:29 UTCEPSS rescoreEPSS 1.6% · 76th percentile
- 2026-10-21 16:28 UTCEPSS rescoreEPSS 1.6% · 76th percentile
- 2026-10-21 08:26 UTCEG score recompute
- 2026-10-21 08:26 UTCVendor advisory
- 2026-10-21 08:26 UTCGHSA enrichmentGHSA-rg44-hwh5-vcpq · GitHub severity HIGH · GitHub CVSS 8.8
- 2026-10-20 16:28 UTCEPSS rescoreEPSS 1.6% · 76th percentile
- 2026-10-19 16:28 UTCEPSS rescoreEPSS 1.6% · 76th percentile
- 2026-10-18 16:28 UTCEPSS rescoreEPSS 1.6% · 76th percentile
- 2026-10-18 08:48 UTCEG score recompute
- 2026-10-17 16:29 UTCEPSS rescoreEPSS 1.6% · 76th percentile
- 2026-10-16 16:34 UTCEPSS rescoreEPSS 1.6% · 76th percentile
- 2026-10-15 21:25 UTCOSV refresh
- 2026-10-15 16:28 UTCEPSS rescoreEPSS 1.6% · 76th percentile
- 2026-10-14 16:29 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-10-13 16:28 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-10-12 19:04 UTCEG score recompute
- 2026-10-12 16:30 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-10-11 23:30 UTCEG score recompute
- 2026-10-11 13:44 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-10-10 19:56 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-10-09 20:04 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-10-08 16:40 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-10-07 23:45 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-10-06 15:14 UTCEPSS rescoreEPSS 1.6% · 75th percentile
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- 2026-10-05 17:40 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-10-04 23:19 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-10-03 14:22 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-10-02 16:23 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-09-30 15:46 UTCEG score recompute
- 2026-09-30 15:00 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-09-29 15:15 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-09-28 13:47 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-09-26 15:54 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-09-26 00:21 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-09-24 14:00 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-09-24 12:55 UTCOSV refresh
- 2026-09-23 13:45 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-09-22 14:44 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-09-21 20:28 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-09-20 20:13 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-09-19 15:38 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-09-18 19:24 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-09-17 19:23 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-09-16 14:05 UTCEPSS rescoreEPSS 1.6% · 75th percentile
- 2026-09-15 03:06 UTCEPSS rescoreEPSS 1.6% · 74th percentile
- 2026-09-12 14:57 UTCEPSS rescoreEPSS 1.6% · 74th percentile
- 2026-09-11 14:49 UTCEPSS rescoreEPSS 1.6% · 74th percentile
- 2026-09-11 09:33 UTCEPSS rescoreEPSS 1.6% · 74th percentile
- 2026-09-08 21:57 UTCEPSS rescoreEPSS 1.6% · 74th percentile
- 2026-09-07 15:58 UTCEPSS rescoreEPSS 1.6% · 74th percentile
- 2026-09-06 13:45 UTCEPSS rescoreEPSS 1.6% · 74th percentile
- 2026-09-05 15:25 UTCEPSS rescoreEPSS 1.6% · 74th percentile
- 2026-09-05 05:44 UTCOSV refresh
- 2026-09-04 13:57 UTCEPSS rescoreEPSS 1.6% · 74th percentile
- 2026-09-04 05:03 UTCEPSS rescoreEPSS 1.6% · 74th percentile
- 2026-09-02 14:09 UTCEPSS rescoreEPSS 1.6% · 74th percentile
- 2026-09-01 13:51 UTCEPSS rescoreEPSS 1.6% · 74th percentile
- 2026-08-30 19:14 UTCEPSS rescoreEPSS 1.6% · 74th percentile
- 2026-08-30 01:19 UTCEPSS rescoreEPSS 1.6% · 74th percentile
- 2026-08-28 21:38 UTCEPSS rescoreEPSS 1.6% · 74th percentile
- 2026-08-27 14:22 UTCEPSS rescoreEPSS 1.6% · 74th percentile
- 2026-08-26 14:43 UTCEPSS rescoreEPSS 1.6% · 74th percentile
- 2026-08-25 13:46 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-24 14:13 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-21 23:46 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-20 22:52 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-19 17:01 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-18 15:58 UTCOSV refresh
- 2026-08-18 13:45 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-17 13:44 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-16 14:53 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-16 02:11 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-15 01:27 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-13 21:57 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-12 13:48 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-11 13:38 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-09 13:44 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-08 16:34 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-07 16:24 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-06 13:44 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-05 19:15 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-04 15:06 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-04 10:34 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-03 11:57 UTCOSV refresh
- 2026-08-03 10:33 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-02 02:24 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-01 04:13 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-07-30 16:25 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-07-30 01:28 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-07-28 15:33 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-07-26 14:52 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-07-25 14:15 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-07-24 14:15 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-07-23 14:16 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-07-23 02:06 UTCEG score recompute
Related CVEs(same product + same vendor + same CWE)
Same product
10 shownAlpine:v3.15:samba
- CVE-2020-1472EG 10.0 KEVEPSS p100CRITICAL
- CVE-2022-45141EG 9.8CRITICAL
- CVE-2017-14746EG 9.8EPSS p96CRITICAL
- CVE-2019-10197NVD 6.5EG 9.1CRITICAL
- CVE-2021-44142NVD 8.8EG 9.0EPSS p99CRITICAL
- CVE-2022-42898EG 8.8EPSS p94HIGH
- CVE-2022-32744EG 8.8HIGH
- CVE-2022-2031EG 8.8HIGH
- CVE-2020-25721EG 8.8HIGH
- CVE-2021-3738EG 8.8HIGH
Same vendor
2 shownubuntu:USN-5260-1
Frequently asked(5)
What is CVE-2022-0336?
When was the CVE record for CVE-2022-0336 published?
Is CVE-2022-0336 actively exploited?
What is the CVSS score of CVE-2022-0336?
How do I remediate CVE-2022-0336?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2022-0336
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