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Classic Buffer OverflowWeakness · CWE-120

CVE-2026-24823

CRITICAL · 10.0 CVSS v4.0 Published 2026-01-27
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in FASTSHIFT X-TRACK (Software/X-Track/USER/App/Utils/lv_img_png/PNGdec/src modules). This vulnerability is associated with program files inflate.C. This issue affects X-TRACK: through v2.7.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

A classic buffer overflow vulnerability exists in the PNG decoding library (PNGdec) within X-TRACK's inflate.C file. The vulnerability stems from the inflate.c module performing buffer copies without validating input sizes, allowing an out-of-bounds write that could enable arbitrary code execution or denial of service.

MitigationUpgrade X-TRACK beyond v2.7 to obtain a patched PNGdec library with proper bounds checking, or apply source-level fixes to inflate.C to validate buffer sizes before memory copy operations.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
Authentication
Y
User interaction
None
Scope
N

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:C/RE:L/U:Red

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Confirm X-TRACK installation
    Identify if FASTSHIFT X-TRACK software is present on the system by checking for the application or its components
    Affected if X-TRACK is installed on the system
  2. Determine X-TRACK version
    Locate and read the version information for the installed X-TRACK instance (check application metadata, version file, or about dialog)
    Affected if The installed version is v2.7 or any earlier version (v2.6, v2.5, etc.)
  3. Identify PNG decoding usage
    Determine whether the PNGdec module or PNG decoding functionality is actively used by the X-TRACK installation
    Affected if PNG decoding is enabled or utilized in the environment
  4. Check for untrusted PNG processing
    Audit configurations or usage patterns to determine if the system processes PNG files from untrusted or external sources
    Affected if The system processes PNG files from untrusted sources

A user is affected if FASTSHACK X-TRACK v2.7 or earlier is installed and its PNGdec module processes PNG files, since the buffer overflow in inflate.C only triggers during PNG decompression of crafted input.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Patch available Apply the vendor patch
Vendor patch github.com →
Interim mitigation

Upgrade X-TRACK beyond v2.7 to obtain a patched PNGdec library with proper bounds checking, or apply source-level fixes to inflate.C to validate buffer sizes before memory copy operations.

Have this fixed Scoped from the published advisory
  • Consultation6.0 h
  • Implementation8.0 h
  • Testing8.0 h
  • Review / QA4.0 h
26.0 hours of engineering $4,560
Get the patch applied

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,296.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-24823 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
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