How severe is CVE-2006-3126?

CVE-2006-3126 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2006-3126 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-3126?

CVE-2006-3126 affects Julian Pawlowski Capi4hylafax. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-3126?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2006-3126 published?

CVE-2006-3126 was published on 2006-09-06 and last updated on 2026-06-16.

CVE-2006-3126

CVE-2006-3126 is a high-severity vulnerability in Julian Pawlowski Capi4hylafax with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Julian Pawlowski Capi4hylafax
Published: 2006-09-06
Last modified: 2026-06-16

Description

c2faxrecv in capi4hylafax 01.02.03 allows remote attackers to execute arbitrary commands via null (\0) and shell metacharacters in the TSI string, as demonstrated by a fax from an anonymous number.

Frequently asked questions

What is CVE-2006-3126?: c2faxrecv in capi4hylafax 01.02.03 allows remote attackers to execute arbitrary commands via null (\0) and shell metacharacters in the TSI string, as demonstrated by a fax from an anonymous number.
How severe is CVE-2006-3126?: CVE-2006-3126 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2006-3126 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-3126?: CVE-2006-3126 affects Julian Pawlowski Capi4hylafax. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-3126?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2006-3126 published?: CVE-2006-3126 was published on 2006-09-06 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:julian_pawlowski:capi4hylafax:01.02.03:*:*:*:*:*:*:*

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CVE-2006-1231 — Low (CVSS 1.2): CAPI4HylaFAX 1.3, when compiled with GENERATE_DEBUGSFFDATAFILE set, allows local users to modify arbitrary files via a…

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