Security readout for executives and security teams
Plain-English summary
This flaw is a critical memory corruption issue in Micrium uC-HTTP 3.01.01 HTTP Server. A remote attacker could potentially disrupt or take control of affected embedded systems by sending an HTTP request. Business risk depends on whether products or firmware actually include and expose this HTTP server.
Executive priority
Treat as high-priority for embedded and IoT environments, especially where device web interfaces are reachable from untrusted networks. Prioritize inventory first because the public data does not prove every Gecko Platform deployment is affected.
Technical view
CVE-2022-24942 is a heap-based buffer overflow, CWE-122, in MicriumOS HTTP Server functionality. The CVSS 3.1 score is 9.1 with network attack vector, low complexity, no privileges, and no user interaction. Sources describe potential remote code execution via HTTP request, but do not provide complete downstream product exposure details.
Likely exposure
Likely exposure is limited to embedded systems or firmware using Micrium uC-HTTP 3.01.01 HTTP Server and exposing it over a network. The provided affected data references Silicon Labs Gecko Platform, but also marks default status as unaffected, so asset-level verification is required.
Exploitation context
The source bundle does not show CISA KEV listing or other cited evidence of active exploitation. Risk remains high because the vulnerability is remotely reachable, unauthenticated, low complexity, and affects HTTP server code that may sit on embedded devices.
Researcher notes
The strongest evidence is the CVE record, CVE List JSON, Silicon Labs advisory, and patched source reference. Do not assume affected downstream devices without firmware evidence. The CVSS vector indicates integrity and availability impact, while the description states potential remote code execution.
Mitigation direction
- Review the Silicon Labs advisory for applicable product and firmware guidance.
- Inventory firmware and SBOMs for Micrium uC-HTTP 3.01.01 HTTP Server usage.
- Apply vendor-provided firmware or SDK updates where the advisory says applicable.
- Restrict network access to exposed embedded HTTP services.
- Disable the HTTP server where it is not operationally required.
Validation and detection
- Confirm whether deployed firmware includes Micrium uC-HTTP 3.01.01 HTTP Server.
- Map devices exposing the affected HTTP server to reachable network zones.
- Check vendor advisories for each downstream product using Silicon Labs components.
- Verify fixed firmware includes the patched HTTP server source path.
- Review device crash or restart telemetry around HTTP service 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.
CWE-122: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2022-24942 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
- Critical
- CVSS
- 9.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H3.95.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.1CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/SiliconLabs/gecko_sdk/blame/v4.1.1/platform/micrium_os/net/source/http/server/http_server_req.cCVE reference · patch
- https://community.silabs.com/sfc/servlet.shepherd/document/download/0698Y00000KlMPOQA3?operationContext=S1CVE reference · vendor-advisory
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.
Heap-based Buffer Overflow
Heap-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.