How severe is CVE-2014-6603?

CVE-2014-6603 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2014-6603 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-6603?

CVE-2014-6603 primarily affects Openinfosecfoundation Suricata. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-6603?

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

When was CVE-2014-6603 published?

CVE-2014-6603 was published on 2014-10-07 and last updated on 2026-06-17.

CVE-2014-6603

CVE-2014-6603 is a medium-severity vulnerability in Openinfosecfoundation Suricata 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-399.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Openinfosecfoundation Suricata
Published: 2014-10-07
Last modified: 2026-06-17

Description

The SSHParseBanner function in SSH parser (app-layer-ssh.c) in Suricata before 2.0.4 allows remote attackers to bypass SSH rules, cause a denial of service (crash), or possibly have unspecified other impact via a crafted banner, which triggers a large memory allocation or an out-of-bounds write.

Frequently asked questions

What is CVE-2014-6603?: The SSHParseBanner function in SSH parser (app-layer-ssh.c) in Suricata before 2.0.4 allows remote attackers to bypass SSH rules, cause a denial of service (crash), or possibly have unspecified other impact via a crafted banner, which triggers a large memory allocation or an out-of-bounds write.
How severe is CVE-2014-6603?: CVE-2014-6603 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2014-6603 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-6603?: CVE-2014-6603 primarily affects Openinfosecfoundation Suricata. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-6603?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-6603 published?: CVE-2014-6603 was published on 2014-10-07 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:openinfosecfoundation:suricata:*:*:*:*:*:*:*:*
cpe:2.3:a:openinfosecfoundation:suricata:2.0.1-1:*:*:*:*:*:*:*
cpe:2.3:a:openinfosecfoundation:suricata:2.0.1-2:*:*:*:*:*:*:*
cpe:2.3:a:openinfosecfoundation:suricata:2.0.2-1:*:*:*:*:*:*:*
cpe:2.3:a:openinfosecfoundation:suricata:2.0.2-2:*:*:*:*:*:*:*
cpe:2.3:a:openinfosecfoundation:suricata:2.0.3-1:*:*:*:*:*:*:*

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All CVEs affecting Openinfosecfoundation Suricata →

Other CWE-399 (Resource Management Errors) vulnerabilities

CVE-2015-8104 — Critical (CVSS 10.0): The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a…
CVE-2015-0339 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
CVE-2014-0560 — Critical (CVSS 10.0): Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.12 and 11.x before 11.0.09 on Windows and OS…

Browse all CWE-399 (Resource Management Errors) vulnerabilities →