CVE-2026-49445
CWE-732Published: July 15, 2026· Updated: Jul 16, 2026
Official Description
Cilium is a networking, observability, and security solution. Prior to 1.17.14, 1.18.8, and 1.19.2, when Cilium L7 functionality is enabled, the embedded or standalone Envoy instance creates a world-accessible admin.sock on cluster nodes, allowing a local attacker to access Envoy admin endpoints, expose TLS secrets, disrupt cluster traffic, or terminate Envoy. This issue is fixed in versions 1.17.14, 1.18.8, and 1.19.2.
Risk Analysis
This critical vulnerability in Cilium allows a local attacker to access sensitive Envoy admin endpoints, expose TLS secrets, and disrupt cluster traffic. The flaw is due to the creation of a world-accessible admin.sock when L7 functionality is enabled, resulting in a CVSS score of 9.2.
No public exploit is currently known for this vulnerability, which requires local access for exploitation.
Upgrade Cilium to versions 1.17.14, 1.18.8, or 1.19.2 or later to address this local privilege escalation vulnerability. Ensure proper file permissions and access controls are in place for sensitive files and sockets on cluster nodes.
Technical Analysis
CVE-2026-49445 requires local access, meaning attackers must already have a foothold on the target system.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), availability disruption (denial of service), with a CVSS base score of 9.2.
The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.
CVSS v3.1 Vector Breakdown
Exploit & PoC Resources
All References (6)
Quick Facts
Related CVEs (CWE-732)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-49445 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts