How severe is CVE-2007-5667?

CVE-2007-5667 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-2007-5667 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-5667?

CVE-2007-5667 primarily affects Novell Client. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-5667?

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-2007-5667 published?

CVE-2007-5667 was published on 2007-11-14 and last updated on 2026-06-16.

CVE-2007-5667

CVE-2007-5667 is a high-severity vulnerability in Novell Client with a CVSS 2.0 base score of 7.2. 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-20.

Key facts

Severity: High (CVSS 2.0 base score 7.2)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Novell Client
Published: 2007-11-14
Last modified: 2026-06-16

Description

NWFILTER.SYS in Novell Client 4.91 SP 1 through SP 4 for Windows 2000, XP, and Server 2003 makes the \.\nwfilter device available for arbitrary user-mode input via METHOD_NEITHER IOCTLs, which allows local users to gain privileges by passing a kernel address as an argument and overwriting kernel memory locations.

Frequently asked questions

What is CVE-2007-5667?: NWFILTER.SYS in Novell Client 4.91 SP 1 through SP 4 for Windows 2000, XP, and Server 2003 makes the \.\nwfilter device available for arbitrary user-mode input via METHOD_NEITHER IOCTLs, which allows local users to gain privileges by passing a kernel address as an argument and overwriting kernel memory locations.
How severe is CVE-2007-5667?: CVE-2007-5667 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-2007-5667 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-5667?: CVE-2007-5667 primarily affects Novell Client. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-5667?: 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-2007-5667 published?: CVE-2007-5667 was published on 2007-11-14 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:novell:client:4.91:sp1:*:*:*:*:*:*
cpe:2.3:a:novell:client:4.91:sp2:*:*:*:*:*:*
cpe:2.3:a:novell:client:4.91:sp3:*:*:*:*:*:*
cpe:2.3:a:novell:client:4.91:sp4:*:*:*:*:*:*

More vulnerabilities in Novell Client

CVE-2008-0639 — Critical (CVSS 10.0): Stack-based buffer overflow in the EnumPrinters function in the Spooler service (nwspool.dll) in Novell Client 4.91…
CVE-2007-6701 — Critical (CVSS 10.0): Multiple stack-based buffer overflows in the Spooler service (nwspool.dll) in Novell Client 4.91 SP4 for Windows allow…
CVE-2007-2954 — Critical (CVSS 10.0): Multiple stack-based buffer overflows in the Spooler service (nwspool.dll) in Novell Client 4.91 SP2 through SP4 for…
CVE-2006-6443 — Critical (CVSS 10.0): Buffer overflow in the Novell Distributed Print Services (NDPS) Print Provider for Windows component (NDPPNT.DLL) in…
CVE-2006-2304 — Critical (CVSS 10.0): Multiple integer overflows in the DPRPC library (DPRPCW32.DLL) in Novell Client 4.83 SP3, 4.90 SP2 and 4.91 SP2 allow…
CVE-2000-0793 — Critical (CVSS 10.0): Norton AntiVirus 5.00.01C with the Novell Netware client does not properly restart the auto-protection service after…

All CVEs affecting Novell Client →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →