Security readout for executives and security teams
Plain-English summary
CVE-2022-29799 is a local flaw in networkd-dispatcher where unsanitized network state values can escape the expected /etc/networkd-dispatcher directory. The record rates it medium, but it matters because Microsoft associated it with the Nimbuspwn Linux elevation-of-privilege research.
Executive priority
Treat this as a moderate Linux hardening and patch-management item, not an internet-edge emergency. Prioritize shared hosts, developer workstations, and systems where local compromise could expose sensitive data or support privilege-escalation chains.
Technical view
The vulnerability is CWE-22 directory traversal in networkd-dispatcher. OperationalState or AdministrativeState values are not sanitized before being used to select functions under /etc/networkd-dispatcher. CVSS 3.1 is 5.5: local access, low complexity, low privileges, no user interaction, unchanged scope, and high confidentiality impact.
Likely exposure
Exposure is most likely on Linux hosts that have networkd-dispatcher installed and in use. The provided CVE data does not identify exact affected versions, distributions, package names, or default-install status.
Exploitation context
The source bundle supports local, low-privilege exploitation conditions. It does not show KEV listing or active exploitation evidence. Microsoft’s reference frames the issue within Nimbuspwn elevation-of-privilege research, but this CVE record itself describes directory traversal.
Researcher notes
Evidence is incomplete on exact affected versions and standalone exploit impact. The CVE record names directory traversal and confidentiality impact; Microsoft’s Nimbuspwn reference suggests broader elevation-of-privilege context. Avoid assuming active exploitation or specific fixes beyond vendor guidance.
Mitigation direction
- Inventory Linux hosts for networkd-dispatcher installation and active service use.
- Check distribution or vendor advisories for fixed networkd-dispatcher packages.
- Apply available vendor updates through normal Linux package management.
- Disable or remove networkd-dispatcher where it is not operationally required.
- Prioritize systems where untrusted local users or workloads can run code.
Validation and detection
- Confirm whether networkd-dispatcher is installed on Linux server and workstation images.
- Check package version against distribution security advisories for CVE-2022-29799.
- Review service status to determine whether networkd-dispatcher is actively used.
- Verify patch deployment through endpoint inventory or package compliance data.
- Look for local-user exposure on multi-tenant or developer systems.
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.
CWE-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2022-29799 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:H/I:N/A:N
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:H/I:N/A:N1.83.6Primary 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:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.microsoft.com/security/blog/2022/04/26/microsoft-finds-new-elevation-of-privilege-linux-vulnerability-nimbuspwn/CVE 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.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.