CVE-2026-88344: n/a
An out-of-bounds read vulnerability exists in the schema lexer of flatcc version 4c3b999e. The issue occurs when an exact-length FlatBuffers schema buffer ends with a digit, causing the integer digit-scan loop in the lex() function to read past the end of the input buffer. This results in a one-byte heap buffer over-read that can cause an application crash and denial of service.
AI Analysis
Technical Summary
CVE-2026-88344 describes an out-of-bounds read vulnerability in the schema lexer component of flatcc version 4c3b999e. Specifically, when processing an exact-length FlatBuffers schema buffer that ends with a digit, the lex() function's integer digit-scan loop advances beyond the buffer boundary, dereferencing an out-of-bounds pointer. This leads to a one-byte heap buffer over-read, which can cause the affected application to crash and result in denial of service conditions.
Potential Impact
The vulnerability can cause a one-byte heap buffer over-read, which may lead to application crashes and denial of service. There is no information about code execution or data corruption beyond the crash. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid processing untrusted FlatBuffers schema buffers that end with digits or apply input validation to prevent triggering the vulnerability.
CVE-2026-88344: n/a
Description
An out-of-bounds read vulnerability exists in the schema lexer of flatcc version 4c3b999e. The issue occurs when an exact-length FlatBuffers schema buffer ends with a digit, causing the integer digit-scan loop in the lex() function to read past the end of the input buffer. This results in a one-byte heap buffer over-read that can cause an application crash and denial of service.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-88344 describes an out-of-bounds read vulnerability in the schema lexer component of flatcc version 4c3b999e. Specifically, when processing an exact-length FlatBuffers schema buffer that ends with a digit, the lex() function's integer digit-scan loop advances beyond the buffer boundary, dereferencing an out-of-bounds pointer. This leads to a one-byte heap buffer over-read, which can cause the affected application to crash and result in denial of service conditions.
Potential Impact
The vulnerability can cause a one-byte heap buffer over-read, which may lead to application crashes and denial of service. There is no information about code execution or data corruption beyond the crash. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid processing untrusted FlatBuffers schema buffers that end with digits or apply input validation to prevent triggering the vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-09-10T00:00:00.000Z
- State
- PUBLISHED
Threat ID: 6ab2dbb0f7a7c54106ad91ab
Added to database: 09/22/2026, 19:49:04 UTC
Last enriched: 09/22/2026, 20:03:11 UTC
Last updated: 09/22/2026, 20:43:33 UTC
Views: 4
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