CVE-2022-27418Public exploit

Crash via unchecked packet header lengths

Published Apr 12, 2022 · Updated Aug 3, 2024

Heap-based buffer overflow in Tcpreplay 4.4.1 allows local users to crash tcpreplay-edit by processing a crafted packet capture. The checksum path trusts corrupt IPv4 header lengths, causing do_checksum_math to read two-byte words beyond the heap-allocated packet buffer. The user must invoke packet editing on the crafted capture; the demonstrated consequence is an AddressSanitizer-detected abort, not code execution.

CVSS severity7.8
High
EPSS probability0.87%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in Tcpreplay 4.4.1 allows local users to crash tcpreplay-edit by processing a crafted packet capture. The checksum path trusts corrupt IPv4 header lengths, causing do_checksum_math to read two-byte words beyond the heap-allocated packet buffer. The user must invoke packet editing on the crafted capture; the demonstrated consequence is an AddressSanitizer-detected abort, not code execution.

The record

CVE
CVE-2022-27418
Published
Apr 12, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1203
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

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

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-787Out-of-bounds Write
T1203Exploitation for Client Execution

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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