CVE-2024-20721 T5 Acrobat JS vulnerability - Exploitable crash via t5::javascript::get_page_num_words

What is CVE-2024-20721?

CVE-2024-20721 is a medium-severity denial of service vulnerability in Adobe Acrobat, published on 15 Jan 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Acrobat Reader T5 (MSFT Edge) versions 120.0.2210.91 and earlier are affected by an Improper Input Validation vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Weakness: CWE-20

Which versions are affected by CVE-2024-20721?

It affects 2 products.

Products include Adobe Acrobat, Microsoft Edge Chromium.

How do I fix CVE-2024-20721?

No fix has been published for CVE-2024-20721 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2024-20721 being exploited?

There is no known exploitation of CVE-2024-20721 in the wild and no public exploit code.

Other vulnerabilities in Adobe Acrobat

• CVE-2021-28550 Adobe Acrobat and Reader Use-After-Free Exploited Critical 9.6
• CVE-2021-21017 Adobe Acrobat and Reader Heap-based Buffer Overflow Exploited High 8.8
• CVE-2014-0546 Adobe Reader and Acrobat Sandbox Bypass Exploited High 8.8
• CVE-2014-0496 Adobe Reader and Acrobat Use-After-Free Exploited High 8.8
• CVE-2013-3346 Adobe Reader and Acrobat Memory Corruption Exploited High 8.8

All Adobe Acrobat vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-x2gj-v23f-mw5p.