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CVE Record

CVE-2019-19778: An issue was discovered in libsixel 1.8.2.

An issue was discovered in libsixel 1.8.2. There is a heap-based buffer over-read in the function load_sixel at loader.c.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2019-19778 is a reported memory-reading flaw in libsixel 1.8.2, a library used to handle SIXEL graphics. If software processes crafted SIXEL input through the affected code path, it may read beyond a heap buffer. The public record does not provide severity scoring, confirmed business impact, or a named fixed version.

Executive priority

Prioritize as an inventory and dependency hygiene item unless exposure to untrusted SIXEL input is confirmed. Escalate systems that parse user-supplied graphics, because memory parsing flaws can affect availability or confidentiality, but the current public evidence does not justify declaring an emergency.

Technical view

The CVE describes a heap-based buffer over-read in libsixel 1.8.2, specifically in load_sixel at loader.c. The source bundle does not include CVSS, CWE mapping, detailed affected package data, exploit maturity, or remediation commits. Treat exposure as input-processing risk wherever libsixel parses untrusted SIXEL content.

Likely exposure

Exposure is most likely in applications, terminals, converters, or services that include libsixel 1.8.2 and process SIXEL image data. The source bundle lists affected vendor/product as n/a, so downstream distribution packages and embedded copies require separate inventory validation.

Exploitation context

The CVE is not listed as CISA KEV in the provided bundle, and no cited source states active exploitation. The public details only establish a heap buffer over-read in a parsing function; they do not prove remote reachability, exploitability, crash behavior, or data disclosure impact.

Researcher notes

Evidence is sparse. The CVE names libsixel 1.8.2 and load_sixel in loader.c but provides no CVSS vector, CWE, fixed version, or confirmed exploitation. Research should focus on reachable parsing paths, downstream patches, and whether deployed applications accept untrusted SIXEL data.

Mitigation direction

  • Inventory systems and applications for libsixel 1.8.2 or embedded copies.
  • Check upstream and distribution vendor guidance for patched versions or backports.
  • Prioritize updates where SIXEL input can come from untrusted users or files.
  • Restrict or disable untrusted SIXEL processing until remediation status is confirmed.
  • Monitor package advisories because the bundle does not name a fixed version.

Validation and detection

  • Review SBOMs, package manifests, and build dependencies for libsixel 1.8.2.
  • Identify workflows that parse SIXEL graphics from external or user-supplied sources.
  • Confirm whether distro packages include a security backport despite unchanged version strings.
  • After updating, run regression tests covering SIXEL parsing and image conversion paths.
  • Document unresolved systems where vendor remediation is unavailable or unclear.
Prepared
Confidence
medium
Sources
3

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

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

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CVE-2019-19778 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
2Source 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.