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NVD / CVE Program· CNA Linux

CVE-2026-72416: netfilter: nft_compat: ebtables emulation must reject non-bridge targets

HighCVSS 7.3 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 29/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.17% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 33e1875d6b5b552a2e5652b40074c604199354ee, 7c4f6a55a0fa8efbbe06dfed3fd440bca121f41a, 9dbba7e694ec045f21ede2f892fb42b81b4e1692.

Low priority for now. Upgrade to Linux Linux 33e1875d6b5b552a2e5652b40074c604199354ee, 7c4f6a55a0fa8efbbe06dfed3fd440bca121f41a, 9dbba7e694ec045f21ede2f892fb42b81b4e1692 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_compat: ebtables emulation must reject non-bridge targets xtables targets return netfilter verdicts: NF_ACCEPT, NF_DROP, and so on. ebtables targets return incompatible verdicts: EBT_ACCEPT, EBT_DROP, ... We cannot allow fallback to NFPROTO_UNSPEC. ebtables doesn't permit this since 11ff7288beb2 ("netfilter: ebtables: reject non-bridge targets") but that commit missed the nft_compat layer.

Published
Aug 15, 2026
Updated
Oct 30, 2026
EPSS
0.1% · 6th percentile
CWE
—

Report tools

JSON

Action score

29

Monitor

Low priority for now.

CVSS
29 / 40 · 7.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
7.3
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-72416

When you'll hear from us

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 3.13affected
    • 0ca743a5599199152a31a7146b83213c786c2eb2 and later · before 7c4f6a55a0fa8efbbe06dfed3fd440bca121f41aaffected · git
    • 0ca743a5599199152a31a7146b83213c786c2eb2 and later · before efc17b9240d821c424bc5191a5c6e9384a06293eaffected · git
    • 0ca743a5599199152a31a7146b83213c786c2eb2 and later · before b3f7a84540a0d014ec42343ff5909657c1bd1994affected · git
    • 0ca743a5599199152a31a7146b83213c786c2eb2 and later · before 33e1875d6b5b552a2e5652b40074c604199354eeaffected · git
    • 0ca743a5599199152a31a7146b83213c786c2eb2 and later · before c129b0185e707dce405968e21afccd5728b2ce63affected · git
    • 0ca743a5599199152a31a7146b83213c786c2eb2 and later · before 9dbba7e694ec045f21ede2f892fb42b81b4e1692affected · git
    • before 3.13not affected · semver
    • 6.1.191 and later · up to and including 6.1.*not affected · semver
    • 6.6.145 and later · up to and including 6.6.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxfrom 0—
Debian:13linuxbefore 6.12.100-16.12.100-1
Debian:14linuxbefore 7.1.5-17.1.5-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-72413Aug 15, 2026 · sctp: fix err_chunk memory leaks in INIT handling
    0Monitor
  • ← EarlierCVE-2026-72415Aug 15, 2026 · ASoC: SDCA: Validate written enum value in ge_put_enum_double()
    28Monitor
  • Later →CVE-2026-72418Aug 15, 2026 · netfilter: nf_conncount: prevent connlimit drops for early confirmed ct
    30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux33e1875d6b5b552a2e5652b40074c604199354eeVendor (CNA)
Linux Linux7c4f6a55a0fa8efbbe06dfed3fd440bca121f41aVendor (CNA)
Linux Linux9dbba7e694ec045f21ede2f892fb42b81b4e1692Vendor (CNA)
Linux Linuxb3f7a84540a0d014ec42343ff5909657c1bd1994Vendor (CNA)
Linux Linuxc129b0185e707dce405968e21afccd5728b2ce63Vendor (CNA)
Linux Linuxefc17b9240d821c424bc5191a5c6e9384a06293eVendor (CNA)
debian:linux6.12.100-1 · Debian:13Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Not on record for this CVE: patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records