CVE-2020-24753: Objective Open Cbor Run-Time Project Objective Open Cbor Run-Time

Critical severity, CVSS 9.8. EPSS: 2.6% chance of exploitation in the next 30 days.

A memory corruption vulnerability in Objective Open CBOR Run-time (oocborrt) in versions before 2020-08-12 could allow an attacker to execute code via crafted Concise Binary Object Representation (CBOR) input to the cbor2json decoder. An uncaught error while decoding CBOR Major Type 3 text strings leads to the use of an attacker-controllable uninitialized stack value. This can be used to modify memory, causing a crash or potentially exploitable heap corruption.

Affected products

• Objective Open Cbor Run-Time Project Objective Open Cbor Run-Time: before 2020-08-12 (fixed in 2020-08-12)

Published 2020-09-17. Last modified 2026-06-17.