THREATPORT/VULNERABILITY/CVE-2024-11477
HIGH SEVERITY

CVE-2024-11477

7 Zip vulnerability

CVSS
7.8
EPSS
22.0%
EPSS pct
97th
Exploited
No known
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.
Affected vendor
7 Zip
Affected product
7 Zip
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness type (CWE)
Published
2024-11-22

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable with local access, low attack complexity, requiring no privileges, user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 22.0% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2024-11477

  • Confirm whether 7 Zip 7 Zip is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2024-11477.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2024-11477

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2024-11477 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2024-11477?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2024-11477.

Start free scan

No credit card. Agentless.

Related vulnerabilities

HIGH
CVE-2018-1000773
Wordpress vulnerability
HIGH
CVE-2018-1000659
Limesurvey vulnerability
HIGH
CVE-2018-5391
Linux Kernel vulnerability