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TI-2024-32092 Aliases CVE-2024-47825GHSA-3wwx-63fv-pfq6

CIDR deny policies may not take effect when a more narrow CIDR allow is present

Priority HIGH 71CWE-276Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.

Summary

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Starting in version 1.14.0 and prior to versions 1.14.16 and 1.15.10, a policy rule denying a prefix that is broader than `/32` may be ignored if there is a policy rule referencing a more narrow prefix (`CIDRSet` or `toFQDN`) and this narrower policy rule specifies either `enableDefaultDeny: false` or `- toEntities: all`. Note that a rule specifying `toEntities: world` or `toEntities: 0.0.0.0/0` is insufficient, it must be to entity `all`.This issue has been patched in Cilium v1.14.16 and v1.15.10. As this issue only affects policies using `enableDefaultDeny: false` or that set `toEntities` to `all`, some workarounds are available. For users with policies using `enableDefaultDeny: false`, remove this configuration option and explicitly define any allow rules required. For users with egress policies that explicitly specify `toEntities: all`, use `toEntities: world`.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00397 34th percentileScored 2026-11-07
Fix Fixed cilium (cilium): 1.15.10, 1.14.16github.com/cilium/cilium (Go): 1.15.10, 1.14.16

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ciliumcilium1.15.0 to before 1.15.10; 1.14.0 to before 1.14.161.15.10, 1.14.16Patch availableCNA
—github.com/cilium/cilium (Go)1.15.0 to before 1.15.101.15.10Patch availableGHSA-3wwx-63fv-pfq6
—github.com/cilium/cilium (Go)1.14.0 to before 1.14.161.14.16Patch availableGHSA-3wwx-63fv-pfq6
  • cilium Vendorcilium Affected 1.15.0 to before 1.15.10; 1.14.0 to before 1.14.16 Fixed in 1.15.10, 1.14.16 Patch available CNA
  • github.com/cilium/cilium (Go) Vendor— Affected 1.15.0 to before 1.15.10 Fixed in 1.15.10 Patch available GHSA-3wwx-63fv-pfq6
  • github.com/cilium/cilium (Go) Vendor— Affected 1.14.0 to before 1.14.16 Fixed in 1.14.16 Patch available GHSA-3wwx-63fv-pfq6

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*1.14.0 to before 1.14.16; 1.15.0 to before 1.15.10Vulnerablecilium
  • cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:* Versions 1.14.0 to before 1.14.16; 1.15.0 to before 1.15.10 Vulnerable ·cilium

Remediation

  • Fix · CNA cilium (cilium) Fixed in 1.15.10, 1.14.16
  • Fix · GHSA-3wwx-63fv-pfq6 github.com/cilium/cilium (Go) Fixed in 1.15.10 Advisory →
  • Fix · GHSA-3wwx-63fv-pfq6 github.com/cilium/cilium (Go) Fixed in 1.14.16 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-47825
  2. 2026-10-03 Alias added: GHSA-3wwx-63fv-pfq6

References

Advisory 2

Other 3

  • TI-2023-12305 Cilium eBPF filters may be temporarily removed during agent restart CVSS 3.1CRITICAL 9.8
  • TI-2023-20486 Cilium NetworkPolicy bypass via pod labels CVSS 3.1CRITICAL 9.0
  • TI-2022-11721 Incorrect Default Permissions in Cilium CVSS 3.1HIGH 8.8
  • TI-2026-36600 Cilium: Sensitive information disclosure and cluster disruption via local Envoy admin socket access CVSS 3.1CRITICAL 9.2
  • TI-2026-40915 Cilium: Namespaced HTTPRoutes can redirect traffic to other namespaces CVSS 3.1HIGH 8.9
  • TI-2022-11722 Improper Privilege Management in Cilium CVSS 3.1HIGH 8.2
See all 34 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences