CVE-2021-40726
Last modified
CVE-2021-40726 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a use-after-free vulnerability when processing AcroForm field that could result in arbitrary code execution in the context of the current user. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.. EPSS estimates a 5.12% chance of exploitation in the next 30 days.
Description
Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a use-after-free vulnerability when processing AcroForm field that could result in arbitrary code execution in the context of the current user. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
Metrics
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Adobe | Acrobat Dc | >= 17.011.30059, <= 17.011.30199 |
| Adobe | Acrobat Reader Dc | >= 17.011.30059, <= 17.011.30199 |
| Adobe | Acrobat Dc | >= 20.001.30005, <= 20.004.30006 |
| Adobe | Acrobat Reader Dc | >= 20.001.30005, <= 20.004.30006 |
| Adobe | Acrobat Dc | >= 15.008.20082, <= 21.005.20058 |
| Adobe | Acrobat Reader Dc | >= 15.008.20082, <= 21.005.20058 |
| Adobe | Acrobat Dc | >= 15.008.20082, <= 21.005.20060 |
| Adobe | Acrobat Reader Dc | >= 15.008.20082, <= 21.005.20060 |
References
- https://helpx.adobe.com/security/products/acrobat/apsb21-55.htmlRelease Notes, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-1249/Third Party Advisory, VDB Entry
- https://helpx.adobe.com/security/products/acrobat/apsb21-55.htmlRelease Notes, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-1249/Third Party Advisory, VDB Entry
Timeline
- Published
- Last Modified
- Status
- Modified
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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