CVE-2026-81977: Integer Underflow (Wrap or Wraparound) (CWE-191) in Adobe Adobe Acrobat
Adobe Acrobat contains an integer underflow vulnerability that may allow disclosure of sensitive memory information. Exploitation requires user interaction by opening a crafted malicious file. The vulnerability has a medium severity rating with a CVSS score of 5.5.
AI Analysis
Technical Summary
CVE-2026-81977 is an integer underflow (wrap or wraparound) vulnerability in Adobe Acrobat. This flaw could be exploited by an attacker to disclose sensitive information from memory. Successful exploitation requires the victim to open a maliciously crafted file, which triggers the underflow condition. The vulnerability is classified under CWE-191 and has a CVSS 3.1 base score of 5.5, indicating medium severity. No specific affected versions or patches have been disclosed at this time.
Potential Impact
An attacker who convinces a user to open a malicious file in Adobe Acrobat could cause disclosure of sensitive memory contents. This could lead to leakage of confidential information. There is no indication of integrity or availability impact. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should exercise caution when opening files from untrusted sources and avoid opening suspicious or unexpected documents.
CVE-2026-81977: Integer Underflow (Wrap or Wraparound) (CWE-191) in Adobe Adobe Acrobat
Description
Adobe Acrobat contains an integer underflow vulnerability that may allow disclosure of sensitive memory information. Exploitation requires user interaction by opening a crafted malicious file. The vulnerability has a medium severity rating with a CVSS score of 5.5.
CVSS v3.1
Score 5.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-81977 is an integer underflow (wrap or wraparound) vulnerability in Adobe Acrobat. This flaw could be exploited by an attacker to disclose sensitive information from memory. Successful exploitation requires the victim to open a maliciously crafted file, which triggers the underflow condition. The vulnerability is classified under CWE-191 and has a CVSS 3.1 base score of 5.5, indicating medium severity. No specific affected versions or patches have been disclosed at this time.
Potential Impact
An attacker who convinces a user to open a malicious file in Adobe Acrobat could cause disclosure of sensitive memory contents. This could lead to leakage of confidential information. There is no indication of integrity or availability impact. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should exercise caution when opening files from untrusted sources and avoid opening suspicious or unexpected documents.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- adobe
- Date Reserved
- 2026-08-27T21:20:45.364Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6aa07233acd9273b4931f6da
Added to database: 09/08/2026, 20:38:11 UTC
Last enriched: 09/08/2026, 21:07:56 UTC
Last updated: 09/09/2026, 01:22:11 UTC
Views: 6
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