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CVE Record

CVE-2018-19502: An issue was discovered in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.1.

An issue was discovered in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.1. There was a heap-based buffer overflow in the function excluded_channels() in libfaad/syntax.c.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2018-19502 is a memory corruption flaw in FAAD2 2.8.1, an audio decoding library. A specially crafted audio file could trigger a heap-based buffer overflow while the library parses channel data. Business risk is highest where servers, applications, or automated pipelines decode audio from untrusted users.

Executive priority

Treat this as a targeted patching and exposure-review item, not an emergency without more evidence. Prioritize systems that automatically decode external audio because the vulnerable component operates on file content.

Technical view

The issue is a heap-based buffer overflow in excluded_channels() in libfaad/syntax.c in FAAD2 2.8.1. The source bundle includes public proof-of-concept references and Debian/Gentoo security advisories, but no CVSS score, CWE, or complete upstream remediation detail is provided.

Likely exposure

Exposure is most likely in Linux systems, applications, or media-processing services using FAAD2/faad2 2.8.1, including packaged or embedded copies. Internet-facing upload or transcoding workflows that process untrusted audio deserve priority review.

Exploitation context

The bundle references a public PoC repository, so reproducibility information exists publicly. There is no KEV listing and no cited source here claiming active exploitation in the wild.

Researcher notes

Evidence is incomplete: the bundle names the vulnerable function and version, plus distro advisories and a PoC reference, but provides no CVSS vector or active exploitation confirmation. Avoid assuming impact beyond memory corruption without reviewing the referenced advisories and upstream issue.

Mitigation direction

  • Apply vendor-fixed faad2 packages from your Linux distribution or software supplier.
  • Review Debian DLA/DSA and Gentoo GLSA guidance where those platforms apply.
  • Inventory applications that statically bundle FAAD2 rather than using system packages.
  • Sandbox or isolate audio decoding for untrusted files where immediate patching is delayed.
  • Limit acceptance of untrusted audio inputs until affected components are updated.

Validation and detection

  • Check package inventories for faad2 or FAAD2 version 2.8.1.
  • Identify services that decode audio uploaded by users or external partners.
  • Verify whether applications bundle libfaad independently of OS packages.
  • Confirm vendor advisories or package changelogs include CVE-2018-19502.
  • Prioritize regression testing for media import, upload, and transcoding workflows after updates.
Prepared
Confidence
medium
Sources
8

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2018-19502 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
7Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.