Classic Buffer OverflowWeakness · CWE-120

CVE-2026-24800

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 tildearrow furnace (extern/zlib modules). This vulnerability is associated with program files inflate.C.

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 zlib inflate module (inflate.C) of tildearrow furnace. The vulnerability stems from insufficient bounds checking during buffer copy operations, allowing an attacker to write data beyond allocated buffer boundaries. This out-of-bounds write could enable arbitrary code execution or denial of service.

MitigationUpdate to the latest version of tildearrow furnace once a patch is released. If immediate patching is not possible, consider network-level restrictions on input sources and input validation before passing data to the affected zlib inflate functions.

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:D/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. Identify tildearrow furnace installation and version
    Check for the presence of the tildearrow furnace executable or library (commonly named 'furnace' or similar) and retrieve its version using --version flag or checking application metadata
    Affected if The installed version is older than the patched version (once released) or cannot be determined to be patched
  2. Locate the zlib inflate module in the installation
    Search the application directory for inflate.C or compiled inflate object files (inflate.o, inflate.obj) or the compiled zlib library (libz.a, zlib.dll, etc.)
    Affected if The vulnerable inflate.C source file or its compiled derivatives are present in the installation
  3. Determine if the software processes external untrusted input
    Review application logs, configuration files, or runtime behavior to confirm whether tildearrow furnace loads or processes audio files, presets, or other data from untrusted or network sources
    Affected if The application is configured to accept or process input from untrusted sources (network, user-uploaded files, or external presets) that would invoke the zlib inflate functions
  4. Inspect for crash logs or memory corruption indicators
    Examine system event logs, application crash dumps, or stderr/stdout output for signs of memory corruption, buffer overflow errors, or unexpected crashes during file loading
    Affected if Crashes or memory corruption errors occur when loading compressed audio files, presets, or other data that triggers the inflate functionality

A user is affected if tildearrow furnace is installed with an unpatched version and processes untrusted or external input that triggers the vulnerable zlib inflate buffer copy operations.

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

Update to the latest version of tildearrow furnace once a patch is released. If immediate patching is not possible, consider network-level restrictions on input sources and input validation before passing data to the affected zlib inflate functions.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,100
Get the patch applied

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,960.

Scan for this in your stack

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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-2026-24800 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
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