Security readout for executives and security teams
Plain-English summary
CVE-2022-21533 is a denial-of-service flaw in Oracle Solaris 11 SMB Server. A low-privileged user with logon access to the Solaris environment could cause the system to hang or crash repeatedly. It is not described as data theft or privilege escalation.
Executive priority
Treat as moderate priority unless Solaris SMB hosts support critical operations. The main business risk is service outage from a logged-in low-privileged attacker, not confirmed data compromise.
Technical view
The CVE describes an easily exploitable local vulnerability in Oracle Solaris 11 SMB Server with CVSS 3.1 score 5.5. The vector is AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H, meaning availability-only impact requiring low privileges and no user interaction.
Likely exposure
Exposure appears limited to Oracle Solaris 11 systems using the SMB Server component where an attacker can obtain low-privileged logon access to the Solaris infrastructure.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. The described attack requires local/logon access, not unauthenticated remote access.
Researcher notes
No CWE is provided in the source bundle. Available evidence supports availability impact only. Remediation detail is limited to Oracle's advisory reference, so avoid assuming a specific package, SRU, or workaround without vendor confirmation.
Mitigation direction
- Review Oracle's July 2022 Critical Patch Update for Solaris guidance.
- Patch or update affected Solaris 11 systems according to Oracle guidance.
- Limit low-privileged shell or logon access to Solaris SMB hosts.
- Restrict SMB Server use to systems with a clear business need.
- Monitor Solaris SMB hosts for repeated hangs or crashes.
Validation and detection
- Inventory Solaris 11 hosts and identify SMB Server usage.
- Compare installed Solaris patch levels against Oracle CPU guidance.
- Confirm which users have logon access to affected Solaris systems.
- Review operational logs for recurring crashes, hangs, or SMB-related instability.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2022-21533 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H1.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.oracle.com/security-alerts/cpujul2022.htmlCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.