CVE-2020-6304
CVE-2020-6304 is a high-severity vulnerability in Sap Netweaver Internet Communication Manager (kernel) with a CVSS 3.x base score of 7.5. 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 3.x base score 7.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 1% (67th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-20
- Affected product: Sap Netweaver Internet Communication Manager (kernel)
- Published:
- Last modified:
Description
Improper input validation in SAP NetWeaver Internet Communication Manager (update provided in KRNL32NUC & KRNL32UC 7.21, 7.21EXT, 7.22, 7.22EXT KRNL64NUC & KRNL64UC 7.21, 7.21EXT, 7.22, 7.22EXT, 7.49 KERNEL 7.21, 7.49, 7.53) allows an attacker to prevent users from accessing its services through a denial of service.
Frequently asked questions
- What is CVE-2020-6304?
- Improper input validation in SAP NetWeaver Internet Communication Manager (update provided in KRNL32NUC & KRNL32UC 7.21, 7.21EXT, 7.22, 7.22EXT KRNL64NUC & KRNL64UC 7.21, 7.21EXT, 7.22, 7.22EXT, 7.49 KERNEL 7.21, 7.49, 7.53) allows an attacker to prevent users from accessing its services through a denial of service.
- How severe is CVE-2020-6304?
- CVE-2020-6304 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2020-6304 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-6304?
- CVE-2020-6304 primarily affects Sap Netweaver Internet Communication Manager (kernel). In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2020-6304?
- 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-2020-6304 published?
- CVE-2020-6304 was published on 2020-01-14 and last updated on 2026-06-17.
References
- https://launchpad.support.sap.com/#/notes/2848498
- https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=533671771
Affected products (22)
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(kernel\):7.21:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(kernel\):7.22:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(kernel\):7.49:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(kernel\):7.53:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(krnl32nuc\):7.21:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(krnl32nuc\):7.21ext:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(krnl32nuc\):7.22:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(krnl32nuc\):7.22ext:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(krnl32uc\):7.21:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(krnl32uc\):7.21ext:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(krnl32uc\):7.22:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(krnl32uc\):7.22ext:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(krnl64nuc\):7.21:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(krnl64nuc\):7.21ext:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(krnl64nuc\):7.22:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(krnl64nuc\):7.22ext:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(krnl64nuc\):7.49:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(krnl64uc\):7.21:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(krnl64uc\):7.21ext:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(krnl64uc\):7.22:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(krnl64uc\):7.22ext:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_internet_communication_manager_\(krnl64uc\):7.49:*:*:*:*:*:*:*
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