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CVE-2026-27671 is a critical memory corruption vulnerability in the SAP Kernel used by Application Server ABAP in SAP NetWeaver and ABAP Platform. The flaw is caused by improper validation of RFC protocol data. An unauthenticated remote attacker can send a specially crafted RFC request that triggers logical errors in memory management; available reporting further characterizes the issue as a stack-based buffer overflow in the RFC protocol handler caused by insufficient bounds checking on incoming RFC data written into a stack-allocated buffer. Successful exploitation can corrupt process memory and may affect the core kernel layer shared by vulnerable ABAP application server instances.
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What an attacker gets, and what they’ve been doing with it.
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No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
22 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Critical vulnerability in the kernel of SAP NetWeaver Application Server ABAP exploitable by an unauthenticated attacker.
One of several critical SAP NetWeaver vulnerabilities that can expose environments to unauthorized access, memory corruption, data exposure, or service disruption.
Critical SAP Kernel vulnerability in SAP NetWeaver AS ABAP and ABAP Platform caused by improper validation of RFC requests, allowing an unauthenticated remote attacker to trigger memory corruption or stack buffer overflow and fully compromise the system.
A critical unauthenticated memory corruption vulnerability in the SAP Application Server ABAP kernel caused by improper RFC protocol validation, potentially enabling compromise of confidentiality, integrity, and availability.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.