Security readout for executives and security teams
Plain-English summary
This flaw affects an embedded HTTP server component. A malicious network packet can trigger a heap buffer overflow and may allow arbitrary code execution without authentication or user interaction.
Executive priority
Treat as urgent for any internet-reachable or operationally important embedded HTTP service. The business risk is remote compromise of devices running affected firmware, but actual exposure depends on deployed component versions.
Technical view
CVE-2023-45318 is a CWE-122 heap-based buffer overflow in Weston Embedded uC-HTTP HTTP Server functionality at git commit 80d4004. The CVSS 3.1 score is 10.0 with network attack vector, low complexity, no privileges, no user interaction, scope change, and high CIA impact.
Likely exposure
Exposure is most likely in embedded products or firmware using Weston Embedded uC-HTTP commit 80d4004 or Silicon Labs Gecko Platform 4.3.2.0. Evidence in the bundle does not identify broader versions or specific device models.
Exploitation context
The sources state that a specially crafted network packet can trigger the vulnerability and lead to arbitrary code execution. CISA KEV status is false in the bundle, and no provided source supports active exploitation in the wild.
Researcher notes
The source bundle provides high-confidence vulnerability mechanics but limited remediation detail. Avoid broad product assumptions beyond uC-HTTP commit 80d4004 and Silicon Labs Gecko Platform 4.3.2.0 unless confirmed by vendor data.
Mitigation direction
- Inventory firmware and products using uC-HTTP or Gecko Platform 4.3.2.0.
- Check Weston Embedded and Silicon Labs guidance for fixed versions or patches.
- Remove internet exposure for affected embedded HTTP services.
- Disable the HTTP server where business operations do not require it.
- Apply network allowlisting or segmentation as compensating control.
Validation and detection
- Confirm affected component versions through SBOMs, firmware manifests, or vendor documentation.
- Identify reachable embedded HTTP services in relevant products and environments.
- Verify whether any asset uses uC-HTTP commit 80d4004.
- Review vendor advisories before claiming remediation is complete.
- Track KEV and vendor updates for exploitation or patch changes.
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-2023-45318 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
- 10 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/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:C/C:H/I:H/A:H3.96Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
10CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source materials
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.