How severe is CVE-2004-1940?

CVE-2004-1940 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2004-1940 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-1940?

CVE-2004-1940 affects Wirlab Kphone. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2004-1940?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2004-1940 published?

CVE-2004-1940 was published on 2004-12-31 and last updated on 2026-06-16.

CVE-2004-1940

CVE-2004-1940 is a medium-severity vulnerability in Wirlab Kphone with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Wirlab Kphone
Published: 2004-12-31
Last modified: 2026-06-16

Description

sipclient.cpp in KPhone 4.0.1 and earlier allows remote attackers to cause a denial of service (crash) via a STUN response packet with a large attrLen value that causes an out-of-bounds read.

Frequently asked questions

What is CVE-2004-1940?: sipclient.cpp in KPhone 4.0.1 and earlier allows remote attackers to cause a denial of service (crash) via a STUN response packet with a large attrLen value that causes an out-of-bounds read.
How severe is CVE-2004-1940?: CVE-2004-1940 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2004-1940 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-1940?: CVE-2004-1940 affects Wirlab Kphone. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2004-1940?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2004-1940 published?: CVE-2004-1940 was published on 2004-12-31 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:wirlab:kphone:*:*:*:*:*:*:*:*

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