CVE-2026-81991 Acrobat Reader | Out-of-bounds Read (CWE-125)
An attacker can disclose sensitive memory information by tricking a user into opening a malicious file in Adobe Acrobat Reader.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-81991?
CVE-2026-81991 is a medium-severity vulnerability in Adobe Acrobat, published on 8 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Acrobat Reader is affected by an out-of-bounds read vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to disclose sensitive information. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Weakness: CWE-125
Which versions are affected by CVE-2026-81991?
It affects 3 products.
Products include Adobe Acrobat, Adobe Acrobat Dc, Adobe Acrobat Reader Dc.
How do I fix CVE-2026-81991?
No fix has been published for CVE-2026-81991 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-81991 being exploited?
There is no known exploitation of CVE-2026-81991 in the wild and no public exploit code.
Other vulnerabilities in Adobe Acrobat
Sources
Also known as GHSA-p5hf-923q-w4m4.