CVE-2021-39843: Adobe Acrobat Reader XObject Out-of-Bound Write Vulnerability
First published: Wed Sep 29 2021(Updated: )
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 write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Credit: psirt@adobe.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Adobe Acrobat Reader | >=20.001.30005<=20.004.30006 | |
| Adobe Acrobat Reader | >=20.001.30005<=20.004.30006 | |
| Apple iOS and macOS | ||
| Microsoft Windows | ||
| Adobe Acrobat | >=15.008.20082<=21.005.20058 | |
| Adobe Acrobat Reader | >=15.008.20082<=21.005.20058 | |
| Adobe Acrobat | >=15.008.20082<=21.005.20060 | |
| Adobe Acrobat Reader | >=15.008.20082<=21.005.20060 | |
| Adobe Acrobat Reader | >=17.011.30059<=17.011.30199 | |
| Adobe Acrobat Reader | >=17.011.30059<=17.011.30199 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Frequently Asked Questions
What is the severity of CVE-2021-39843?
CVE-2021-39843 has a severity rating that indicates it could lead to arbitrary code execution if exploited.
How do I fix CVE-2021-39843?
To fix CVE-2021-39843, update to the latest version of Adobe Acrobat or Acrobat Reader that resolves this vulnerability.
What are the affected versions related to CVE-2021-39843?
CVE-2021-39843 affects Adobe Acrobat Reader DC versions 2021.005.20060 and earlier, 2020.004.30006 and earlier, and 2017.011.30199 and earlier.
What type of vulnerability is CVE-2021-39843?
CVE-2021-39843 is classified as an out-of-bounds write vulnerability.
Can CVE-2021-39843 be exploited remotely?
Yes, CVE-2021-39843 could potentially be exploited to execute arbitrary code in the context of the current user.
- agent/type
- agent/weakness
- agent/author
- agent/references
- agent/description
- agent/severity
- agent/title
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/first-publish-date
- agent/event
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/adobe
- canonical/adobe acrobat reader
- version/adobe acrobat reader/20.001.30005
- version/adobe acrobat reader/20.004.30006
- vendor/apple
- canonical/apple ios and macos
- vendor/microsoft
- canonical/microsoft windows
- canonical/adobe acrobat
- version/adobe acrobat/15.008.20082
- version/adobe acrobat/21.005.20058
- version/adobe acrobat reader/15.008.20082
- version/adobe acrobat reader/21.005.20058
- version/adobe acrobat/21.005.20060
- version/adobe acrobat reader/21.005.20060
- version/adobe acrobat reader/17.011.30059
- version/adobe acrobat reader/17.011.30199