CVE-2022-27416Public exploit

CLI crash via recursive Juniper DLT cleanup

Published Apr 12, 2022 · Updated Aug 3, 2024

Double-free in Tcpreplay 4.4.1 allows local users to crash tcprewrite by processing a crafted packet capture through the Juniper DLT plugin. The dlt_jnpr_ether_cleanup function calls tcpedit_dlt_cleanup on the Juniper subcontext and then frees that same subcontext again. Triggering requires local users to run tcprewrite on the crafted capture; the demonstrated consequence is termination of the CLI process.

CVSS severity7.8
High
EPSS probability0.84%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Double-free in Tcpreplay 4.4.1 allows local users to crash tcprewrite by processing a crafted packet capture through the Juniper DLT plugin. The dlt_jnpr_ether_cleanup function calls tcpedit_dlt_cleanup on the Juniper subcontext and then frees that same subcontext again. Triggering requires local users to run tcprewrite on the crafted capture; the demonstrated consequence is termination of the CLI process.

The record

CVE
CVE-2022-27416
Published
Apr 12, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-415, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 12, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.1NIST NVDAV:N/AC:H/Au:N/C:P/I:P/A:P
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-415Double Free
T1204.002Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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