CVE-2025-9649Public exploit

Local process crash via unchecked PPS divisor

Published Aug 29, 2025 · Updated Aug 29, 2025

Divide-by-zero in calc_sleep_time in AppNeta Tcpreplay 4.5.1 allows local users to crash the process via crafted PPS input. The send_packets.c routine divides during packet-rate limiting without checking whether an extremely small PPS value makes the divisor zero. Exploitation requires local execution with a crafted packet capture and PPS parameter and terminates only the invoked tcpreplay process with SIGFPE.

CVSS severity3.3
Low
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Divide-by-zero in calc_sleep_time in AppNeta Tcpreplay 4.5.1 allows local users to crash the process via crafted PPS input. The send_packets.c routine divides during packet-rate limiting without checking whether an extremely small PPS value makes the divisor zero. Exploitation requires local execution with a crafted packet capture and PPS parameter and terminates only the invoked tcpreplay process with SIGFPE.

The record

CVE
CVE-2025-9649
Published
Aug 29, 2025
Updated
Aug 29, 2025
Vendor
AppNeta
Product
Tcpreplay
Classifications
CWE-404, CWE-369
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 29, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 29, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.5.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

AppNeta · Tcpreplayversion=4.5.1

Published CVSS scores

1.7VulDBAV:L/AC:L/Au:S/C:N/I:N/A:P
1.9VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
CWE-369Divide By Zero

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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