CVE-2021-40730: Adobe Acrobat Reader DC JPEG2000 Parsing Use-After-Free Information Disclosure Vulnerability
Adobe Acrobat Reader DC version 21.007.20095 (and earlier), 21.007.20096 (and earlier), 20.004.30015 (and earlier), and 17.011.30202 (and earlier) is affected by a use-after-free that allow a remote attacker to disclose sensitive information on affected installations of of Adobe Acrobat Reader DC. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of JPG2000 images.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 21.007.20095 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 21.007.20096 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 20.004.30015 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.011.30202
Event History
Frequently Asked Questions
What is the severity of CVE-2021-40730?
CVE-2021-40730 has a severity rating of critical due to its potential for remote information disclosure.
How do I fix CVE-2021-40730?
To mitigate CVE-2021-40730, update Adobe Acrobat Reader DC and Adobe Acrobat to the latest version recommended by Adobe.
Which versions are affected by CVE-2021-40730?
CVE-2021-40730 affects Adobe Acrobat Reader DC versions 21.007.20095 and earlier, along with several other older versions of Adobe Acrobat.
Can CVE-2021-40730 be exploited remotely?
Yes, CVE-2021-40730 can be exploited remotely by attackers to disclose sensitive information.
Is CVE-2021-40730 specific to Windows?
No, CVE-2021-40730 affects Adobe Acrobat products on multiple operating systems, including Windows and macOS.