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Full vulnerability report · 2026
CVE-2026-1264High confidence

IBM Sterling B2B Integrator and IBM Sterling File Gateway Improper Access Controls

IBM · Sterling B2B Integrator

7.1HighCVSS 3.1
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-12661

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

IBM Sterling B2B Integrator and IBM Sterling File Gateway 6.1.0.0 through 6.1.2.7_2, 6.2.0.0 through 6.2.0.5_1, 6.2.1.0 through 6.2.1.1_1, and 6.2.2.0 allows a remote unauthenticated attacker to view and delete the partners of a community and to delete the communities.

What

IBM Sterling B2B Integrator and IBM Sterling File Gateway 6.1.0.0 through 6.1.2.7_2, 6.2.0.0 through 6.2.0.5_1, 6.2.1.0 through 6.2.1.1_1, and 6.2.2.0 allows a remote unauthenticated attacker to view and delete the partners of a community and to delete the communities.

Why

A security-sensitive function is reachable without the authentication check that should protect it.

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

IBM Sterling B2B Integrator and IBM Sterling File Gateway 6.1.0.0 through 6.1.2.7_2, 6.2.0.0 through 6.2.0.5_1, 6.2.1.0 through 6.2.1.1_1, and 6.2.2.0 allows a remote unauthenticated attacker to view and delete the partners of a community and to delete the communities.

Why

A security-sensitive function is reachable without the authentication check that should protect it.

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Missing Authentication for Critical Function → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-306 ↗

CWE-306: Missing Authentication for Critical Function. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CLowConfidentiality impact: A successful attack can cause a limited loss.IHighIntegrity impact: A successful attack can cause a major loss.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkCWE-306
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

CERT-FR · French · CERTFR-2026-AVI-0327Multiples vulnérabilités dans les produits IBM

org/CVERecord?id=CVE-2025-66675 Référence CVE CVE-2025-68301 https://www.cve.org/CVERecord?id=CVE-2025-68301 Référence CVE CVE-2025-68349 https://www.cve.org/CVERecord?id=CVE-2025-68349 Référence CVE CVE-2025-8916 https://www.cve.org/CVERecord?id=CVE-2025-8916 Référence CVE CVE-2025-9086 https://www.cve.org/CVERecord?id=CVE-2025-9086 Référence CVE CVE-2025-9287 https://www.cve.org/CVERecord?id=CVE-2025-9287 Référence CVE CVE-2025-9288 https://www.cve.org/CVERecord?id=CVE-2025-9288 Référence CVE CVE-2026-0865 https://www.cve.org/CVERecord?id=CVE-2026-0865 Référence CVE CVE-2026-1188 https://www.cve.org/CVERecord?id=CVE-2026-1188 Référence CVE CVE-2026-1264 https://www.cve.org/CVERecord?id=CVE-2026-1264 Référence CVE CVE-2026-1299 https://www.cve.org/CVERecord?id=CVE-2026-1299 Référence CVE CVE-2026-21441 https://www.cve.org/CVERecord?id=CVE-2026-21441 Référence CVE CVE-2026-21925 https://www.cve.org/CVERecord?id=CVE-2026-21925 Référence CVE CVE-2026-21932 https://www.cve.org/CVERecord?id=CVE-2026-21932 Référence CVE CVE-2026-21933 https://www.cve.org/CVERecord?id=CVE-2026-21933 Référence CVE CVE-2026-21945 https://www.cve.org/CVERecord?id=CVE-2026-21945 Référence CVE CVE-2026-22998 https://www.cve.org/CVERecord?id=CVE-2026-22998 Gestion détaillée du document le 20 mars 2026 Version initiale Al

Official advisory
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
Sterling B2B Integrator: 6.1.0.0 ≤ 6.1.2.7_2, 6.2.0.0 ≤ 6.2.0.5_1, 6.2.1.0 ≤ 6.2.1.1_1, 6.2.2.0
Fixed
Remediation/Fixes Product Version APAR Remediation & Fix IBM Sterling B2B Integrator and IBM Sterling File Gateway 6.1.0.0 - 6.1.2.7_2 IT48934 Apply B2Bi 6.1.2.8, 6.2.0.5_2, 6.2.1.1_2 or 6.2.2.0_1 IBM Sterling B2B Integrator and IBM Sterling File Gateway 6.2.0.0 - 6.2.0.5_1 IT48934 Apply B2Bi 6.2.0.5_2, 6.2.1.1_2 or 6.2.2.0_1 IBM Sterling B2B Integrator and IBM Sterling File Gateway 6.2.1.0 - 6.2.1.1_1 IT48934 Apply B2Bi 6.2.1.1_2 or 6.2.2.0_1 IBM Sterling B2B Integrator and IBM Sterling File Gateway 6.2.2.0 IT48934 Apply B2Bi 6.2.2.0_1 The IIM versions of 6.1.2.8, 6.2.0.5_2, 6.2.1.1_2 and 6.2.2.0_1 are available on Fix Central . The container version of 6.1.2.8, 6.2.0.5_2, 6.2.1.1_2 and 6.2.2.0_1 are available in IBM Entitled Registry.
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 17 Mar 2026 · Last source change 18 Mar 2026, 20:15 UTC · CWE-306 · Missing Authentication for Critical Function

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-12661
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCNA
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2026-12661↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-1264 · cve.blacktree.nl