CVE-2009-1830: Stack-based buffer overflow in Soulseek 156 and 157 NS allows remote attackers to execute arbitrary code via a

Q: How do I fix CVE-2009-1830?

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

Q: Is CVE-2009-1830 being exploited?

CVE-2009-1830 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2009-1830 affect?

CVE-2009-1830 affects soulseek. Severity is high (CVSS 10.0). Stack-based buffer overflow in Soulseek 156 and 157 NS allows remote attackers to execute arbitrary code via a long search query.

Q: How urgent is CVE-2009-1830?

Priority 64/100. Critical severity; EPSS top 5%: very likely to be exploited; Public exploit reference

This week

HIGH 10.0DOWNGRADE

CVE-2009-1830 is a high-severity flaw (CVSS 10.0) affecting soulseek. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow in Soulseek 156 and 157 NS allows remote attackers to execute arbitrary code via a long search query.

Why this priority

Critical severity
EPSS top 5%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	8.6% (top 5%)
CISA exploited list	No
Weakness	CWE-119
Published	2009-05-29
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: slsknet

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2009-05-29 22:30 UTCPublished CVE record published
2026-06-16 23:08 UTCUpdated Record last modified

slsknet soulseek DOWNGRADE

Affected: 156 · 157_ns

Fixed in: no fixed release known

Safe to downgrade to: a release before 156

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 156 (Debian / Ubuntu)

apt-cache madison soulseek sudo apt install soulseek=<VERSION_BEFORE_156> sudo apt-mark hold soulseek

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

dnf --showduplicates list soulseek sudo dnf downgrade soulseek-<VERSION_BEFORE_156> sudo dnf versionlock add soulseek

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Soulseek 157 NS < 13e/156.x - Remote Peer Search Code Execution (PoC)
Exploit-DB: Soulseek 157 NS x/156.x - Remote Distributed Search Code Execution
Exploit-DB: Soulseek 157 NS - Remote Buffer Overflow (SEH)

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-2009-1830?

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

Is CVE-2009-1830 being exploited?

CVE-2009-1830 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-2009-1830 affect?

CVE-2009-1830 affects soulseek. Severity is high (CVSS 10.0). Stack-based buffer overflow in Soulseek 156 and 157 NS allows remote attackers to execute arbitrary code via a long search query.

How urgent is CVE-2009-1830?

Priority 64/100. Critical severity; EPSS top 5%: very likely to be exploited; Public exploit reference

References

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