Security readout for executives and security teams
Plain-English summary
CVE-2026-24800 is a critical memory-safety flaw reported in tildearrow Furnace’s bundled zlib inflate.C code. The CVSS score is 10.0, but the affected-version data is sparse and lists only version “0” with a default unaffected status. Treat this as urgent if Furnace or its code is used in your environment, especially where untrusted compressed input may be processed.
Executive priority
Prioritize assessment now because the reported impact is critical and the flaw is a memory-corruption issue. Business urgency depends on whether Furnace is deployed, embedded, or exposed to untrusted input. Ask engineering to confirm usage and patch status, rather than assuming broad enterprise exposure from the current data.
Technical view
The CVE describes CWE-120/CWE-787 out-of-bounds write/classic buffer overflow behavior in tildearrow/furnace extern/zlib modules, associated with inflate.C. The CVSS v4 vector indicates network attackability, low complexity, no privileges, no user interaction, and high impacts. The only provided remediation reference is GitHub pull request #2471.
Likely exposure
Exposure is likely limited to environments using tildearrow Furnace or code derived from its extern/zlib implementation. The provided affected-version metadata is incomplete or unusual, listing version “0” and defaultStatus “unaffected,” so vulnerability managers should verify actual affected releases with upstream guidance.
Exploitation context
No active exploitation is indicated in the provided sources, and the CVE is not marked in KEV. The CVSS vector suggests severe potential impact and remote reachability, but the sources do not provide exploit details, proof-of-concept status, or confirmed real-world attacks.
Researcher notes
The record’s affected-version data appears weak: version “0,” no CPEs, and defaultStatus “unaffected.” The PR reference is the main technical lead. Further analysis should focus on mapping the vulnerable inflate.C code to real Furnace releases and determining whether external inputs can reach that parser.
Mitigation direction
- Review tildearrow Furnace pull request #2471 and apply the vendor-supported fix when available.
- Track upstream Furnace releases or advisories that include the PR #2471 remediation.
- Avoid processing untrusted compressed content with affected Furnace builds until remediated.
- If Furnace is embedded, update or replace the bundled vulnerable code path.
Validation and detection
- Inventory systems, applications, and build artifacts using tildearrow Furnace.
- Check whether deployed Furnace code includes extern/zlib inflate.C.
- Compare deployed code against the changes in pull request #2471.
- Monitor the CVE record and upstream repository for clarified affected versions.
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-120: 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 lookupCWE-787: 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 lookupCVE-2026-24800 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
- Critical
- CVSS
- 10 (4.0)
- Known Exploited
- No
- Published
Vector: 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/S:N/AU:Y/R:U/V:D/RE:L/U:Red
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
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/S:N/AU:Y/R:U/V:D/RE:L/U:Red——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
10CriticalVector: 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/S:N/AU:Y/R:U/V:D/RE:L/U:Red
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/tildearrow/furnace/pull/2471CVE reference · patch
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.
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.