CVE-2021-32494
CVE-2021-32494 is a critical-severity vulnerability in Radare Radare2 with a CVSS 3.x base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-369.
Key facts
- Severity: Critical (CVSS 3.x base score 10.0)
- EPSS exploit prediction: 1% (49th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-369
- Affected product: Radare Radare2
- Published:
- Last modified:
Description
Radare2 has a division by zero vulnerability in Mach-O parser's rebase_buffer function. This allow attackers to create malicious inputs that can cause denial of service.
Frequently asked questions
- What is CVE-2021-32494?
- Radare2 has a division by zero vulnerability in Mach-O parser's rebase_buffer function. This allow attackers to create malicious inputs that can cause denial of service.
- How severe is CVE-2021-32494?
- CVE-2021-32494 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-32494 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-32494?
- CVE-2021-32494 affects Radare Radare2. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-32494?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2021-32494 published?
- CVE-2021-32494 was published on 2023-07-07 and last updated on 2026-06-17.
References
- https://github.com/radareorg/radare2/commit/a07dedb804a82bc01c07072861942dd80c6b6d62
- https://github.com/radareorg/radare2/issues/18667
Affected products (1)
- cpe:2.3:a:radare:radare2:5.3.0:*:*:*:*:*:*:*
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