CVE-2021-39861
Last modified
CVE-2021-39861 is a medium-severity vulnerability rated 5.5/10 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 an out-of-bounds read vulnerability that could lead to disclosure of arbitrary memory information in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.. EPSS estimates a 2.46% 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 an out-of-bounds read vulnerability that could lead to disclosure of arbitrary memory information in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Adobe | Acrobat Dc | >= 20.006.20034, <= 21.005.20060 |
| Adobe | Acrobat Dc | >= 20.006.20034, <= 21.005.20058 |
| Adobe | Acrobat Reader Dc | >= 20.006.20034, <= 21.005.20060 |
| Adobe | Acrobat 2017 | >= 17.011.30158, <= 17.011.30199 |
| Adobe | Acrobat Reader 2017 | >= 17.011.30158, <= 17.011.30199 |
| Adobe | Acrobat | >= 20.001.30005, <= 20.004.30006 |
| Adobe | Acrobat Reader | >= 20.001.30005, <= 20.004.30006 |
References
- https://helpx.adobe.com/security/products/acrobat/apsb21-55.htmlRelease Notes, Vendor Advisory
- https://helpx.adobe.com/security/products/acrobat/apsb21-55.htmlRelease Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-39861?
How severe is CVE-2021-39861?
How do I fix CVE-2021-39861?
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.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-39856Acrobat Reader DC ActiveX Control versions 2021.005.20060 (a…6.5
- CVE-2021-39857Adobe Acrobat Reader DC add-on for Internet Explorer version…4.3
- CVE-2021-39858Acrobat Reader DC versions 2021.005.20060 (and earlier), 202…3.3
- CVE-2021-39859Acrobat Reader DC versions 2021.005.20060 (and earlier), 202…5.5
- CVE-2021-3986A vulnerability in janeczku/calibre-web allows unauthorized …4.3
- CVE-2021-39860Acrobat Pro DC versions 2021.005.20060 (and earlier), 2020.0…5.5
- CVE-2021-39862Adobe Framemaker versions 2019 Update 8 (and earlier) and 20…3.3
- CVE-2021-39863Acrobat Reader DC versions 2021.005.20060 (and earlier), 202…7.8
- CVE-2021-39864Adobe Commerce versions 2.4.2-p2 (and earlier), 2.4.3 (and e…6.5
- CVE-2021-39865Adobe Framemaker versions 2019 Update 8 (and earlier) and 20…3.3
- CVE-2021-39866A business logic error in the project deletion process in Gi…5.4
- CVE-2021-39867In all versions of GitLab CE/EE since version 8.15, a DNS re…8.1
Are you affected by CVE-2021-39861?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST
