Security readout for executives and security teams
Plain-English summary
CVE-2026-24821 is a critical out-of-bounds read in WickedEngine’s Lua parsing code. The main business concern is systems that compile untrusted Lua code, where malformed input may expose memory or disrupt availability. The provided sources show a patch reference, but no evidence of active exploitation.
Executive priority
Prioritize if WickedEngine is used in exposed applications or user-content workflows. For internally controlled or trusted-script-only deployments, treat as important patch management rather than an emergency, while monitoring vendor release guidance.
Technical view
The issue is CWE-125 in WickedEngine/LUA modules, associated with lparser.C. WickedEngine through 0.71.727 is listed as affected. CVSS 4.0 score is 9.3, with network attack vector, low complexity, no privileges, no user interaction, high confidentiality impact, and high availability impact.
Likely exposure
Exposure is most likely where WickedEngine is embedded in applications, tools, games, or services that accept or compile Lua from untrusted users or external content. Systems that only run trusted bundled scripts have a narrower exposure, but should still track the vendor patch.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The risk comes from remotely reachable or user-facing Lua compilation paths, especially where attackers can submit crafted Lua code for parsing.
Researcher notes
Evidence is limited to the CVE record and the referenced GitHub patch. Do not assume broader exploitability beyond the described Lua parser out-of-bounds read. Key research questions are reachability of Lua compilation, trust boundary, and whether downstream products vendor WickedEngine code.
Mitigation direction
- Review the GitHub patch pull request and vendor guidance.
- Upgrade or backport the patch once a trusted fixed build is available.
- Disable or restrict compilation of untrusted Lua where feasible.
- Limit Lua submission features to authenticated and trusted users.
- Add input-handling safeguards around external Lua content.
Validation and detection
- Inventory products embedding WickedEngine through version 0.71.727.
- Identify whether Lua compilation accepts untrusted or external input.
- Check whether the lparser.C patch from PR 1095 is present.
- Review crash, memory, and parser error telemetry for unusual Lua inputs.
- Track CVE and vendor repository updates for fixed release details.
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-125: 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-2026-24821 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
- 9.3 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:H/SI:N/SA:H/S:N/AU:Y/R:U/V:D/RE:M/U:Amber
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:N/VA:H/SC:H/SI:N/SA:H/S:N/AU:Y/R:U/V:D/RE:M/U:Amber——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
9.3CriticalVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:H/SI:N/SA:H/S:N/AU:Y/R:U/V:D/RE:M/U:Amber
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/turanszkij/WickedEngine/pull/1095CVE 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.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.