VulnerabilityPublished 12 Aug 2025

CVE-2025-42941: SAP Fiori (Launchpad) · Use of Web Link to Untrusted Target with window.opener Access

Affects SAP Fiori (Launchpad)Source CVE Database V5

Not known to be exploited · CVSS 3.5 Low.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score

3.5Low

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: High
User Interaction: Required
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: High: The attacker is authorized with (i.e., requires) privileges that provide significant (e.g., administrative) control over the vulnerable component that could affect component-wide settings and files.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 12 Aug 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

AI-suggested

To mitigate this vulnerability, European organizations should implement the following specific measures: 1) Review and restrict administrative privileges to minimize the number of users who can configure or introduce external links in SAP Fiori Launchpad. 2) Apply strict input validation and sanitization on all external links to ensure they include the rel="noopener noreferrer" attribute, which prevents the window.opener property from being accessible to the linked page, thereby mitigating Reverse Tabnabbing risks. 3) Conduct regular security audits and code reviews of custom SAP Fiori applications and configurations to detect and remediate unsafe link usage. 4) Educate users about the risks of clicking on external links within the SAP environment, especially those that open new tabs or windows. 5) Monitor SAP system logs for unusual administrative activities related to link configurations. 6) Stay updated with SAP security advisories and apply patches or updates as soon as they become available. 7) Consider deploying web application firewalls (WAF) with rules to detect and block suspicious link manipulations or redirections within SAP web interfaces.

Description

SAP Fiori (Launchpad) is vulnerable to Reverse Tabnabbing vulnerability due to inadequate external navigation protections for its link (<a>) elements. An attacker with administrative user privileges could exploit this by leveraging compromised or malicious pages. While administrative access is necessary for certain configurations, the attacker does not need the administrative privileges to execute the attack. This could result in unintended manipulation of user sessions or exposure of sensitive information. The issue impacts the confidentiality and integrity of the system, but the availability remains unaffected.

Impact

For European organizations using SAP Fiori Launchpad (SAP_UI 754), this vulnerability poses a risk primarily to the confidentiality and integrity of sensitive business data and user sessions. Given SAP's widespread adoption across various industries in Europe, including manufacturing, finance, and public sector entities, exploitation could lead to unauthorized access or manipulation of critical business processes. The requirement for administrative privileges to set up malicious links limits the attack surface to insider threats or attackers who have already gained elevated access. However, once exploited, normal users could be targeted through crafted links, potentially leading to session hijacking or data leakage. The impact is particularly significant for organizations with complex SAP landscapes and multiple users accessing the Fiori Launchpad, as it could undermine trust in the system's security and lead to compliance issues under GDPR if personal data is exposed. Availability is not impacted, so operational disruptions are unlikely, but the breach of confidentiality and integrity could have regulatory and reputational consequences.

CWE-1022Use of Web Link to Untrusted Target with window.opener Access (opens in a new tab)
Variant weaknessLikelihood of exploit: MediumOWASP Top 10 A06:2025: Insecure Design (opens in a new tab)
The web application produces links to untrusted external sites outside of its sphere of control, but it does not properly prevent the external site from modifying security-critical properties of the window.opener object, such as the location property.
Architecture and Design
Specify in the design that any linked external document must not be granted access to the location object of the calling page.
Implementation
When creating a link to an external document using the <a> tag with a defined target, for example "_blank" or a named frame, provide the rel attribute with a value "noopener noreferrer".
Implementation
Do not use "_blank" targets. However, this can affect the usability of the application.
OWASP Cheat Sheets
Docker Security (opens in a new tab)
Third Party Javascript Management (opens in a new tab)
Virtual Patching (opens in a new tab)
Secure Design Principles (opens in a new tab)
OWASP ASVS 4.0.3
V1.4.4 (opens in a new tab)
V1.4.5 (opens in a new tab)
V1.10.1 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

What to do

Description

AI analysisMachine-generated, updated 12 Aug 2025, 02:51 UTC

WeaknessesCWE-1022

Technical details

References

Community reviews

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