CVE-2008-2954: client/NmdcHub.cpp in Linux DC++ (linuxdcpp) before 0.707 allows remote attackers to cause a denial of service

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HIGH 7.8WATCHLISTDOWNGRADE

CVE-2008-2954 is a high-severity flaw (CVSS 7.8) affecting direct connect. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

client/NmdcHub.cpp in Linux DC++ (linuxdcpp) before 0.707 allows remote attackers to cause a denial of service (crash) via an empty private message, which triggers an out-of-bounds read.

Why this priority

High severity
Public exploit reference
On your watchlist

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

Risk facts

CVSS score	7.8 (High)
EPSS exploit chance	3.7% (top 10%)
CISA exploited list	No
Weakness	CWE-20
Published	2008-07-01
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: linux

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

Am I affected?

Timeline

2008-07-01 22:41 UTCPublished CVE record published
2026-06-16 22:54 UTCUpdated Record last modified

linux direct connect DOWNGRADE

Affected: 0.686 · 0.699 · 0.700 · 0.701 · 0.702 · 0.703 · 0.704 · 0.705

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.686

1. Check installed version

apt-cache policy direct-connect || rpm -q direct-connect || direct-connect --version

2. No fixed release: DOWNGRADE to a release before 0.686 (Debian / Ubuntu)

apt-cache madison direct-connect sudo apt install direct-connect=<VERSION_BEFORE_0.686> sudo apt-mark hold direct-connect

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

dnf --showduplicates list direct-connect sudo dnf downgrade direct-connect-<VERSION_BEFORE_0.686> sudo dnf versionlock add direct-connect

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-2008-2954?

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

Is CVE-2008-2954 being exploited?

CVE-2008-2954 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-2008-2954 affect?

CVE-2008-2954 affects direct connect. Severity is high (CVSS 7.8). client/NmdcHub.cpp in Linux DC++ (linuxdcpp) before 0.707 allows remote attackers to cause a denial of service (crash) via an empty private message, which triggers an out-of-bounds read.

How urgent is CVE-2008-2954?

Priority 60/100. High severity; Public exploit reference; On your watchlist

Related CVEs

CVE-2022-23775 CRITICAL 9.8 UPGRADE TrueStack Direct Connect 1.4.7 has Incorrect Access Control.
CVE-2008-2953 MEDIUM 5.0 DOWNGRADE Linux DC++ (linuxdcpp) before 0.707 allows remote attackers to cause a denial of service (crash) via "partial
CVE-2003-0554 MEDIUM 5.0 DOWNGRADE NeoModus Direct Connect 1.0 build 9, and possibly other versions, allows remote attackers to cause a denial of

References

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