CVE-2026-58249: CWE-191: Integer Underflow in SAP_SE SAP NetWeaver and SAP Web Dispatcher (Internet Communication Manager)
Description
CVE-2026-58249 is an integer underflow vulnerability in SAP NetWeaver and SAP Web Dispatcher (Internet Communication Manager) that allows an unauthenticated attacker to send specially crafted requests causing a memory-handling error and process crash. This results in a denial of service affecting availability, with no impact on confidentiality or integrity.
CVSS v3.1
Score 7.5high
Affected software
SAP_SE
SAP NetWeaver and SAP Web Dispatcher (Internet Communication Manager)
pkg:github/sap_se/SAP_NetWeaver_and_SAP_Web_Dispatcher_Internet_Communication_ManagerRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
SAP NetWeaver and SAP Web Dispatcher do not properly validate certain fields in requests processed by an internal protocol component, leading to an integer underflow (CWE-191). An unauthenticated attacker can exploit this by sending malicious requests that trigger memory-handling errors, causing the affected process to crash and resulting in a denial of service condition. The vulnerability affects specific versions of SAP NetWeaver and SAP Web Dispatcher and has a CVSS 3.1 base score of 7.5, indicating high severity due to its impact on availability.
Potential Impact
Successful exploitation causes the affected SAP process to crash, resulting in denial of service and high impact on availability. There is no impact on confidentiality or integrity of the application.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider implementing network-level protections to restrict access to the affected components and monitor for unusual request patterns that could trigger the vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- sap
- Date Reserved
- 2026-06-29T19:35:04.186Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6acd837f2cdf04f656126ec2
Added to database: 10/13/2026, 01:03:59 UTC
Last enriched: 10/13/2026, 01:18:36 UTC
Last updated: 10/13/2026, 01:28:12 UTC
Views: 6
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