CVE-2022-2031: samba
Vulnerability summary
CVE-2022-2031 is a high (CVSS 8.8) vulnerability in samba. EPSS estimates a 1.26% chance of exploitation in the next 30 days, higher than 69.6% of scored vulnerabilities.
Not severe (CVSS 8.8, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 11 · Related 9Timeline
- 25-08-2022PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
A flaw was found in Samba. The security vulnerability occurs when KDC and the kpasswd service share a single account and set of keys, allowing them to decrypt each other's tickets. A user who has been requested to change their password, can exploit this flaw to obtain and use tickets to other services.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · AlpineEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.26%
Chance of exploitation in the next 30 days
Percentile
70%
Versus all other CVEs
30-day change
Increase +0.07 pp
From 1.19% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-288Authentication Bypass Using an Alternate Path or ChannelThe product requires authentication, but the product has an alternate path or channel that does not require authentication.
- CWE-287Improper AuthenticationWhen an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
Affected systems
Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Alpine1 product
- samba≥ 4.15.0, < 4.14.14-r0 | ≥ 4.15.0, < 4.15.12-r0 | ≥ 4.15.0, < 4.15.9-r0
Debian1 product
- samba< 2:4.16.4+dfsg-1
Samba1 product
- samba< 4.14.14 | ≥ 4.15.0, < 4.15.9 | ≥ 4.16.0, < 4.16.4
Ubuntu1 product
- sambaAll versions (No fix recorded) | < 2:4.13.17~dfsg-0ubuntu1.20.04.1 | < 2:4.15.9+dfsg-0ubuntu0.2
4 vendors · 4 products
References
8 links- security.gentoo.org/glsa/202309-06Vendor Advisory
