CVE-2006-2923: The iax_net_read function in the iaxclient open source library, as used in multiple products including (a) Lou

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MEDIUM 6.4DOWNGRADE

CVE-2006-2923 is a medium-severity flaw (CVSS 6.4) affecting loudhush. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The iax_net_read function in the iaxclient open source library, as used in multiple products including (a) LoudHush 1.3.6, (b) IDE FISK 1.35 and earlier, (c) Kiax 0.8.5 and earlier, (d) DIAX, (e) Ziaxphone, (f) IAX Phone, (g) X-lite, (h) MediaX, (i) Extreme Networks ePhone, and (j) iaxComm before 1.2.0, allows remote attackers to execute arbitrary code via crafted IAX 2 (IAX2) packets with truncated (1) full frames or (2) mini-frames, which are d

Why this priority

EPSS top 9%: very likely to be exploited

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

Risk facts

CVSS score	6.4 (Medium)
EPSS exploit chance	4.4% (top 9%)
CISA exploited list	No
Weakness	CWE-119
Published	2006-06-09
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: loudhush

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

Am I affected?

Timeline

2006-06-09 10:02 UTCPublished CVE record published
2026-06-16 22:26 UTCUpdated Record last modified

loudhush loudhush DOWNGRADE

Affected: 1.3.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3.6

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.3.6 (Debian / Ubuntu)

apt-cache madison loudhush sudo apt install loudhush=<VERSION_BEFORE_1.3.6> sudo apt-mark hold loudhush

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

dnf --showduplicates list loudhush sudo dnf downgrade loudhush-<VERSION_BEFORE_1.3.6> sudo dnf versionlock add loudhush

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-2006-2923?

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

Is CVE-2006-2923 being exploited?

CVE-2006-2923 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-2006-2923 affect?

CVE-2006-2923 affects loudhush. Severity is medium (CVSS 6.4). The iax_net_read function in the iaxclient open source library, as used in multiple products including (a) LoudHush 1.3.6, (b) IDE FISK 1.35 and earlier, (c) Kiax 0.8.5 and earlier, (d) DIAX, (e) Ziaxphone, (f) IAX Phone, (g) X-lite, (h) Me

How urgent is CVE-2006-2923?

Priority 45/100. EPSS top 9%: very likely to be exploited

References

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