Security readout for executives and security teams
Plain-English summary
CVE-2026-0499 is a reflected cross-site scripting issue in SAP NetWeaver Enterprise Portal. An attacker can craft a malicious link that runs script in a user's browser if they click it. Business impact is mainly session theft, portal content manipulation, or redirection, not system outage.
Executive priority
Treat as a moderate-priority SAP portal issue. It is not described as actively exploited and needs user interaction, but it can affect session confidentiality and portal trust. Patch planning should be prompt for exposed or business-critical portals.
Technical view
SAP NetWeaver Enterprise Portal EP-RUNTIME 7.50 is affected. The flaw is CWE-79 reflected XSS in a URL parameter, reachable by an unauthenticated attacker, but requiring user interaction. CVSS 3.1 is 6.1: network exploitable, low complexity, no privileges, scope changed, low confidentiality and integrity impact, no availability impact.
Likely exposure
Exposure is likely limited to organizations running SAP NetWeaver Enterprise Portal EP-RUNTIME 7.50, especially internet-accessible portals or portals used through emailed/shared links. The source bundle lists other versions as unaffected by default, but local SAP component inventory should confirm applicability.
Exploitation context
No public source in the bundle states active exploitation, and the CVE is not marked KEV. Exploitation would require convincing a user to visit a crafted URL. Successful exploitation affects that user's browser session and portal view rather than server availability.
Researcher notes
The available record identifies reflected XSS in a URL parameter but does not provide parameter names, payload details, or patch contents. Avoid assuming broader SAP products are affected. Validation should focus on component/version confirmation and SAP Note 3687372 guidance.
Mitigation direction
- Review SAP Note 3687372 for vendor remediation and applicability.
- Check SAP Security Patch Day guidance for related patch instructions.
- Prioritize remediation for internet-facing or widely used portals.
- Use existing web filtering and user-awareness controls to reduce malicious-link exposure.
- Avoid relying on generic XSS fixes without SAP guidance.
Validation and detection
- Inventory SAP NetWeaver Enterprise Portal deployments and identify EP-RUNTIME 7.50.
- Confirm whether SAP Note 3687372 applies to each system.
- Verify patch or configuration status using SAP-supported maintenance records.
- Review access logs for unusual crafted portal URLs, if logging is available.
- Confirm no unsupported exposed portal instances remain internet-accessible.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-0499 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N2.82.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://me.sap.com/notes/3687372CVE reference
- https://url.sap/sapsecuritypatchdayCVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.