How severe is CVE-2009-2474?

CVE-2009-2474 has a CVSS 2.0 base score of 5.8, rated medium severity.

Is CVE-2009-2474 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-2474?

CVE-2009-2474 primarily affects Webdav Neon. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-2474?

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

When was CVE-2009-2474 published?

CVE-2009-2474 was published on 2009-08-21 and last updated on 2026-06-16.

CVE-2009-2474

CVE-2009-2474 is a medium-severity vulnerability in Webdav Neon with a CVSS 2.0 base score of 5.8. 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-326.

Key facts

Severity: Medium (CVSS 2.0 base score 5.8)
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-326
Affected product: Webdav Neon
Published: 2009-08-21
Last modified: 2026-06-16

Description

neon before 0.28.6, when OpenSSL or GnuTLS is used, does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

Frequently asked questions

What is CVE-2009-2474?: neon before 0.28.6, when OpenSSL or GnuTLS is used, does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
How severe is CVE-2009-2474?: CVE-2009-2474 has a CVSS 2.0 base score of 5.8, rated medium severity.
Is CVE-2009-2474 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-2474?: CVE-2009-2474 primarily affects Webdav Neon. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-2474?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-2474 published?: CVE-2009-2474 was published on 2009-08-21 and last updated on 2026-06-16.

References

Affected products (8)

cpe:2.3:a:webdav:neon:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:9.04:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:10:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:11:*:*:*:*:*:*:*

More vulnerabilities in Webdav Neon

CVE-2004-0398 — High (CVSS 7.5): Heap-based buffer overflow in the ne_rfc1036_parse date parsing function for the neon library (libneon) 0.24.5 and…
CVE-2004-0179 — Medium (CVSS 6.8): Multiple format string vulnerabilities in (1) neon 0.24.4 and earlier, and other products that use neon including (2)…
CVE-2009-2473 — Medium (CVSS 4.3): neon before 0.28.6, when expat is used, does not properly detect recursion during entity expansion, which allows…
CVE-2008-3746 — Medium (CVSS 4.3): neon 0.28.0 through 0.28.2 allows remote servers to cause a denial of service (NULL pointer dereference and crash) via…

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