Security readout for executives and security teams
Plain-English summary
CVE-2016-10655 affects the clang-extra Node module, which installed LLVM clang-extra tools by downloading binary resources over plain HTTP. A network-positioned attacker could potentially replace those downloads, creating possible remote code execution during installation or update. The sources do not provide a CVSS score, confirmed exploitation, or a named patch.
Executive priority
Treat this as a dependency hygiene and build-chain risk, not a confirmed internet-wide emergency. Prioritize inventory and removal in CI and developer environments because compromise would occur before application deployment controls may help.
Technical view
The issue is an insecure transport weakness, mapped to CWE-311. clang-extra retrieves binary resources over HTTP, so integrity and confidentiality of the download path are not protected. The cited impact is possible RCE if a man-in-the-middle can swap the requested resource with attacker-controlled content.
Likely exposure
Exposure is most likely in Node/npm projects or build environments that depend on the clang-extra module. Risk is concentrated around dependency installation, rebuilds, CI jobs, or developer workstations performing the HTTP binary download.
Exploitation context
The source bundle says exploitation requires an attacker on the network path or otherwise positioned between the user and remote server. CISA KEV is false, and the provided sources do not report active exploitation.
Researcher notes
Evidence is limited to the CVE description and Node Security advisory reference. No CVSS vector, exploit-in-the-wild report, or fixed version is provided in the bundle. Do not assume runtime exposure unless installation or update paths use the affected module.
Mitigation direction
- Inventory package manifests and lockfiles for clang-extra usage.
- Remove or replace clang-extra where it is not strictly required.
- Check the original advisory and vendor guidance for remediation details.
- Avoid installing affected dependencies over untrusted networks.
- Use controlled build environments with vetted dependency sources.
Validation and detection
- Search repositories and build images for the clang-extra Node module.
- Review CI logs for clang-extra installation or binary download activity.
- Confirm whether any dependency chain still resolves to clang-extra.
- Verify build environments restrict untrusted network positioning during installs.
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-311: 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-2016-10655 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://nodesecurity.io/advisories/265CVE 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.
Missing Encryption of Sensitive Data
Missing Encryption of Sensitive Data represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.