How severe is CVE-2024-1086?

CVE-2024-1086 has a CVSS score of 7.8/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2024-1086?

Affected package information for CVE-2024-1086 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2024-1086?

Upgrade the affected component to the fixed release for CVE-2024-1086, or apply your distribution's backported patch — distro builds are often patched at an older version number, so check your vendor's advisory rather than the upstream version alone.

How do I detect CVE-2024-1086 in my code and dependencies?

Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).

How do I mitigate CVE-2024-1086 if there is no patch (or I can't update yet)?

Constrain what reaches the vulnerable code: limit the size and shape of untrusted input, isolate the affected component in a sandboxed or least-privileged process, and enable the platform's memory-safety mitigations (ASLR, stack protector, hardened allocator) so an out-of-bounds access is more likely to fail closed than to be exploitable.

Is CVE-2024-1086 actively exploited in the wild?

Yes. There are 10 known exploit references for CVE-2024-1086, including 7 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2024-1086?

CVE-2024-1086 has an EPSS (Exploit Prediction Scoring System) score of 28.1%, placing it in the 98th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score warrants monitoring and prompt remediation.

Is CVE-2024-1086 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2024-1086 (Linux Kernel Use-After-Free Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2024-05-30. CISA required all US federal civilian agencies to remediate this vulnerability by 2024-06-20. The required action was: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. This CVE has been used in known ransomware campaigns. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2024-1086?

CVE-2024-1086 is classified as Use After Free (CWE-416). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2024-1086 published, and has it been updated?

CVE-2024-1086 was published on January 31, 2024 and was last updated on October 21, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🛡️

CISA KEV · ACTIVELY EXPLOITED

HIGH severity

CVE-2024-1086 — linux

HIGH

CVE-2024-1086 is a high-severity (CVSS 7.8) Use After Free vulnerability. It is in CISA's Known Exploited Vulnerabilities catalog (added 2024-05-30) and has been used in ransomware campaigns — treat it as actively exploited and patch now. A fix is available — see the affected versions and patch details below.

Use-after-free in Linux kernel's netfilter: nf_tables component

Published

Jan 31, 2024

Updated

Oct 21, 2026

Affected

18 products

Patched

See advisory

Exploits

10 known

Exploitation data as of Oct 23, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2024-05-30 — including use in ransomware campaigns. Federal agencies were required to remediate by 2024-06-20.
A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2024-1086.

EPSS Exploitation Probability

via FIRST.org ↗

28.1%probability of exploitation in next 30 days

Moderate Risk0.00%

Lower risk than most CVEs98th percentile — riskier than 98% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2024-1086 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 395,249 CVEs with a current EPSS score, this one falls in the 10–50% band (highlighted). Counts from FIRST.org, log-scaled.

Description

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.

The nft_verdict_init() function allows positive values as drop error within the hook verdict, and hence the nf_hook_slow() function can cause a double free vulnerability when NF_DROP is issued with a drop error which resembles NF_ACCEPT.

We recommend upgrading past commit f342de4e2f33e0e39165d8639387aa6c19dff660.

Affected Products

18 products · 22 configurations

debian linuxdebian

1 version

10.0

fedorafedoraproject

1 version

linux kernellinux

≥ 6.7 && < 6.7.3

1 version

6.8

500f firmwarenetapp

all

a250 firmwarenetapp

all

bootstrap osnetapp

all

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.