CVE-2018-25225: SIPP 3.3 contains a stack-based buffer overflow vulnerability that allows local unauthenticated attackers to e

Routine

HIGH 8.4DOWNGRADE

CVE-2018-25225 is a high-severity flaw (CVSS 8.4) affecting sipp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SIPP 3.3 contains a stack-based buffer overflow vulnerability that allows local unauthenticated attackers to execute arbitrary code by supplying malicious input in the configuration file. Attackers can craft a configuration file with oversized values that overflow a stack buffer, overwriting the return address and executing arbitrary code through return-oriented programming gadgets.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.4 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 91%)
CISA exploited list	No
Weakness	CWE-306
Published	2026-03-28
Last modified	2026-10-07

Publisher (CNA): VulnCheck · Vendor: sipp project

Last updated 2026-10-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-28 12:16 UTCPublished CVE record published
2026-10-07 08:10 UTCUpdated Record last modified

sipp project sipp DOWNGRADE

Affected: 3.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.3

1. Check installed version

apt-cache policy sipp || rpm -q sipp || sipp --version

2. No fixed release: DOWNGRADE to a release before 3.3 (Debian / Ubuntu)

apt-cache madison sipp sudo apt install sipp=<VERSION_BEFORE_3.3> sudo apt-mark hold sipp

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list sipp sudo dnf downgrade sipp-<VERSION_BEFORE_3.3> sudo dnf versionlock add sipp

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-25225?

sipp: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-25225 being exploited?

CVE-2018-25225 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-25225 affect?

CVE-2018-25225 affects sipp. Severity is high (CVSS 8.4). SIPP 3.3 contains a stack-based buffer overflow vulnerability that allows local unauthenticated attackers to execute arbitrary code by supplying malicious input in the configuration file. Attackers can craft a configuration file with oversi

How urgent is CVE-2018-25225?

Priority 37/100. High severity; Public exploit reference

References

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