Skip to content
High-Risk CVE-2026-125742 in 7-Zip Affects Users via CAB Extraction

High-Risk CVE-2026-125742 in 7-Zip Affects Users via CAB Extraction

First seen 11 Nov 2026, 02:19 UTC • •

Article Content

Browse articles
ThreatCluster AI
ThreatCluster •November 11, 2026 at 02:19 UTC
  • •CVE-2026-125742 affects 7-Zip versions before 26.06.
  • •Attackers can exploit the vulnerability via crafted CAB archives.
  • •Users are urged to upgrade to the fixed release immediately.

A heap out-of-bounds write vulnerability (CVE-2026-125742) has been identified in 7-Zip versions before 26.06. This flaw allows attackers to exploit memory corruption when users extract specially crafted multi-volume CAB archives, potentially leading to arbitrary code execution. The vulnerability is classified as high severity with a CVSS score of 8.5. Users of Windows endpoints with 7-Zip installed, particularly those handling untrusted archives, are most at risk. Attackers may deliver malicious archives via email or downloads to gain control over the affected user's process. As of now, there is no confirmed active exploitation reported, but users are advised to upgrade to the patched version immediately. The vulnerability was published on November 10, 2026.

Start a free Starter trial for enhanced analysis

Ask AI about this cluster

Updated 11h ago How this analysis works

Timeline

2026-11-10
CVE-2026-125742 published
The vulnerability was officially disclosed with a CVSS score of 8.5, indicating high severity.
www.vulncheck.com

More articles in this cluster (4)

Following this threat?

Track CVE-2026-125742 in your own feed — you're alerted when they show up in new reporting, leak sites or exploitation.

Free account · no card needed

Common questions

What versions of 7-Zip are affected?
7-Zip versions before 26.06 are affected by CVE-2026-125742.
How can I mitigate this vulnerability?
Upgrade to the latest version of 7-Zip that addresses this vulnerability.
Is there any active exploitation reported?
No confirmed active exploitation has been reported for this vulnerability as of now.