Integer Overflow Vulnerability in Cilium eBPF by Cilium
CVE-2026-10722

4.8MEDIUM

Key Information:

Vendor

Cilium

Status
Ebpf
Vendor
CVE Published:
3 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-10722?

A vulnerability in Cilium's eBPF component allows local attackers to exploit an integer overflow in the loadRawSpec function, located in the btf.go file. This manipulation can compromise the integrity of the LoadCollectionSpec/LoadCollectionSpecFromReader functionality. It is important for users of Cilium eBPF versions 0.19.0 through 0.21.0 to apply the provided patch to mitigate this risk.

Affected Version(s)

ebpf 0.1

ebpf 0.2

ebpf 0.3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-10722 - Proof of Concept

References

https://vuldb.com/vuln/368091
vdb-entrytechnical-description
https://vuldb.com/vuln/368091/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-10722
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

alifiras (VulDB User)
.