Vulnerability Intelligence Report
7-Zip Zstandard Decompression Integer Underflow Remote Code Execution Vulnerability
CVE-2024-11477
7-Zip Zstandard Decompression Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the implementation of Zstandard decompression. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-24346.
No Active Exploit Signals
CVSS Base Score
7.8
HIGH
Exploitability:1.9
Impact Score:5.9
EPSS Probability:21.98%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-191 ↗CWE-191: Integer Underflow (Wrap or Wraparound)
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| 7-Zip | 7-Zip | 24.06 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
21.985%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Zero Day Initiative · Bug Bounty Provider · Japan |
| Reserved | 2024-11-19T22:30:03 |
| Published | 2024-11-22T20:22:33 |
| Patch Date | 2024-11-20 |
| Last Updated | 2025-02-15T00:10:31 |
Community Chatter & Buzz