VulnerabilityPublished 8 Jul 2025Updated 24 Aug 2025

CVE-2025-3630: IBM Sterling B2B Integrator · XSS or 'Cross-site Scripting'

Affects IBM Sterling B2B IntegratorSource CVE Database V5

Not known to be exploited · CVSS 6.4 Medium.

Data as of 26 Oct 2026, 15:59 UTC

CVSS 3.1 base score

6.4Medium

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Changed
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: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Changed: An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.
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 8 Jul 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

Affected software

Product	Affected	Fixed in
IBM Sterling B2B Integrator	Affected =6.0.0.0 =6.2.0.0	Fixed in–

AI-suggested

European organizations should implement the following specific mitigation measures: 1) Immediately audit and monitor user accounts with access to IBM Sterling B2B Integrator and Sterling File Gateway for suspicious activity, focusing on privilege misuse or anomalous behavior. 2) Enforce strong authentication mechanisms, such as multi-factor authentication (MFA), to reduce the risk of account compromise. 3) Apply strict input validation and output encoding on all user-supplied data within the application, if customizations or extensions are used, to prevent injection of malicious scripts. 4) Isolate the affected systems within segmented network zones to limit potential lateral movement if exploitation occurs. 5) Regularly review and update user permissions to follow the principle of least privilege, minimizing the number of users who can inject content into the web UI. 6) Monitor web application logs for unusual script injections or unexpected UI behavior. 7) Engage with IBM support or security advisories to obtain and apply patches or hotfixes as soon as they become available. 8) Conduct security awareness training for users with access to these platforms to recognize and report suspicious activities. These steps go beyond generic advice by focusing on access control, monitoring, and proactive engagement with vendor updates specific to the affected products.

Description

IBM Sterling B2B Integrator 6.0.0.0 through 6.1.2.6, 6.2.0.0 through 6.2.0.4, IBM Sterling File Gateway 6.0.0.0 through 6.1.2.6, and 6.2.0.0 through 6.2.0.4 is vulnerable to stored cross-site scripting. This vulnerability allows authenticated users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.

Impact

For European organizations, the impact of CVE-2025-3630 can be significant, particularly for those relying on IBM Sterling B2B Integrator and Sterling File Gateway for secure and reliable B2B communications and file transfers. Successful exploitation could lead to credential theft, enabling attackers to escalate privileges or move laterally within the network. This could compromise sensitive business data, disrupt supply chain communications, and damage business relationships. The confidentiality breach could also lead to violations of GDPR and other data protection regulations, resulting in legal and financial penalties. Since the vulnerability requires authenticated access, insider threats or compromised accounts pose a heightened risk. The alteration of web UI functionality could also facilitate further attacks or fraud, undermining operational integrity. Given the critical role of these platforms in sectors like manufacturing, logistics, finance, and retail, the vulnerability could have cascading effects on business continuity and reputation.

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (opens in a new tab)
Base weaknessLikelihood of exploit: HighCWE Top 25 (2025): #1OWASP Top 10 A05:2025: Injection (opens in a new tab)
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Implementation · Architecture and Design
Understand the context in which your data will be used and the encoding that will be expected. This is especially important when transmitting data between different components, or when generating outputs that can contain multiple encodings at the same time, such as web pages or multi-part mail messages.
Architecture and Design · Implementation · Attack Surface Reduction
Understand all the potential areas where untrusted inputs can enter your software: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any external systems that provide…
OWASP Cheat Sheets
Cross Site Scripting Prevention (opens in a new tab)
DOM based XSS Prevention (opens in a new tab)
Injection Prevention (opens in a new tab)
Abuse Case (opens in a new tab)
Deserialization (opens in a new tab)
OWASP ASVS 4.0.3
V5.3.3 (opens in a new tab)
V1.5.1 (opens in a new tab)
Attack patterns
XSS Using MIME Type Mismatch (opens in a new tab)
DOM-Based XSS (opens in a new tab)
Reflected XSS (opens in a new tab)
Stored XSS (opens in a new tab)
Cross-Site Scripting (XSS) (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

ibm.com/support/pages/node/7239095 (opens in a new tab)

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 25 Aug 2025, 00:43 UTC

WeaknessesCWE-79

Technical details

References

Community reviews

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