CVE-2020-24133

CRITICALNVD 9.89.8—

9.8

A heap buffer overflow vulnerability in the r_asm_swf_disass function of Radare2-extras before commit e74a93c allows attackers to execute arbitrary code or carry out denial of service (DOS) attacks.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 85.2%
KEV: Not listed

Published

July 14, 2021

Last Modified

November 21, 2024

Advisory Details (4)

Auto-updated May 26, 2026

Patch available. Sources: github_pr.

github_pr Patch Available

patch Heap overflow

Patch available: radareorg/radare2-extras 5.2.0 (PR #255 merged 2020-07-03)

https://github.com/radareorg/radare2-extras/pull/255/commits/9f6a221433964d9b14f3ed78bc9fb059395b893b

github_pr Patch Available

patch Heap overflow

Patch available: radareorg/radare2-extras 5.2.0 (PR #255 merged 2020-07-03)

https://github.com/radareorg/radare2-extras/pull/255/commits/4a8b24475549ff10bdf6d07fd4b5f6c1cc6246ea

github_pr Patch Available

patch Heap overflow

Patch available: radareorg/radare2-extras 5.2.0 (PR #255 merged 2020-07-03)

https://github.com/radareorg/radare2-extras/pull/255

generic

CWE - CWE-122: Heap-based Buffer Overflow (4.20)

https://cwe.mitre.org/data/definitions/122.html

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-787Out-of-bounds Write

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:15 UTCEPSS rescore
2026-06-08 14:15 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore

Frequently asked(5)

What is CVE-2020-24133?

CVE-2020-24133 is a critical vulnerability published on July 14, 2021. A heap buffer overflow vulnerability in the rasmswf_disass function of Radare2-extras before commit e74a93c allows attackers to execute arbitrary code or carry out denial of service (DOS) attacks.

When was CVE-2020-24133 disclosed?

CVE-2020-24133 was first published in the National Vulnerability Database on July 14, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-24133 actively exploited?

CVE-2020-24133 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 85.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-24133?

CVE-2020-24133 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2020-24133?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-24133, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2020-24133

📅 Published

🔄 Last Modified

📋 Advisory Details (4)

patch Heap overflow

patch Heap overflow

patch Heap overflow

CWE - CWE-122: Heap-based Buffer Overflow (4.20)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-24133?

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Frequently asked(5)

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