CVE-2021-39857
Last modified
CVE-2021-39857 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Adobe Acrobat Reader DC add-on for Internet Explorer versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by an Information Disclosure vulnerability. An unauthenticated attacker could leverage this vulnerability to check for existence of local files. EPSS estimates a 2.44% chance of exploitation in the next 30 days.
Description
Adobe Acrobat Reader DC add-on for Internet Explorer versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by an Information Disclosure vulnerability. An unauthenticated attacker could leverage this vulnerability to check for existence of local files. Exploitation of this issue requires user interaction in that a victim must visit an attacker controlled web page.
Metrics
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Adobe | Acrobat | >= 17.011.30059, <= 17.011.30199 |
| Adobe | Acrobat Reader | >= 17.011.30059, <= 17.011.30199 |
| Adobe | Acrobat | >= 20.001.30005, <= 20.004.30006 |
| Adobe | Acrobat Reader | >= 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://helpx.adobe.com/security/products/acrobat/apsb21-55.htmlRelease Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-39857?
How severe is CVE-2021-39857?
How do I fix CVE-2021-39857?
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-2021-39851Acrobat Reader DC versions 2021.005.20060 (and earlier), 202…5.5
- CVE-2021-39852Acrobat Reader DC versions 2021.005.20060 (and earlier), 202…5.5
- CVE-2021-39853Acrobat Reader DC versions 2021.005.20060 (and earlier), 202…5.5
- CVE-2021-39854Acrobat Reader DC versions 2021.005.20060 (and earlier), 202…5.5
- CVE-2021-39855Acrobat Reader DC ActiveX Control versions 2021.005.20060 (a…6.5
- CVE-2021-39856Acrobat Reader DC ActiveX Control versions 2021.005.20060 (a…6.5
- 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-2021-39861Acrobat Reader DC versions 2021.005.20060 (and earlier), 202…5.5
- CVE-2021-39862Adobe Framemaker versions 2019 Update 8 (and earlier) and 20…3.3
Are you affected by CVE-2021-39857?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST