CVE-2024-39684: Tencent RapidJSON include/rapidjson/reader.h GenericReader::ParseNumber() Function Template Exponent Parsing Integer Overflow

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-07-09 · updated 2026-06-17
Weakness: CWE-190

Description

Tencent RapidJSON is vulnerable to privilege escalation due to an integer overflow in the `GenericReader::ParseNumber()` function of `include/rapidjson/reader.h` when parsing JSON text from a stream. An attacker needs to send the victim a crafted file which needs to be opened; this triggers the integer overflow vulnerability (when the file is parsed), leading to elevation of privilege.

Affected products

Tencent RapidJSON: through 1.1.0

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-39684
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-39684
https://security.netapp.com/advisory/ntap-20240905-0003/

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