CVE-2024-11477
moderate-risk
Published 2024-11-22
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.
Do I need to act?
!
43.6% chance of exploitation in next 30 days
EPSS score — higher than 56% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10
High
LOCAL
/ LOW complexity
Affected Products (1)
Affected Vendors
References (2)
46
/ 100
moderate-risk
Severity
24/34 · High
Exploitability
17/34 · Moderate
Exposure
5/34 · Minimal