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critical advisory

IBM API Connect: Path traversal remote code execution (CVE-2026-17147)

IBM API Connect versions 10.0.8.x and 12.1.x contain a path traversal vulnerability (CVE-2026-17147) that allows an authenticated remote attacker to achieve arbitrary code execution and unauthorized administrative access.

CVE search metadata

CVE search record: CVE-2026-17147. Severity: critical. CVSS: 9.9. KEV: no. Product: API Connect (10.0.8.0 through 10.0.8.12, 12.1.0.0 through 12.1.1.2). Brief: IBM API Connect: Path traversal remote code execution (CVE-2026-17147). Brief link: https://feed.craftedsignal.io/briefs/2026-11-ibm-api-connect-path-traversal/

Triage facts

Revision 1
Applicability
API Connect (10.0.8.0 through 10.0.8.12, 12.1.0.0 through 12.1.1.2)
Evidence
Unknown
Severity
Critical
Action
Elevated
Sources
1 public source
Freshness
Revision 1Nov 7, 05:50 UTC
Vulnerabilities
1 CVE
Source quality
A1Likely

IBM API Connect versions 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 are susceptible to a path traversal vulnerability (CVE-2026-17147). This flaw enables an authenticated remote attacker to bypass intended file system restrictions, potentially leading to arbitrary code execution and the performance of unauthorized administrative functions within the API Connect environment.

Impact

Authenticated remote attackers can gain unauthorized administrative control over the API management environment and execute arbitrary code on the underlying infrastructure.

Recommendation

  • Inventory all instances of IBM API Connect within the environment to identify versions 10.0.8.0-10.0.8.12 and 12.1.0.0-12.1.1.2.
  • Apply the vendor-provided security patches or upgrade to a remediated version of API Connect as specified in official IBM security advisories.
  • Restrict administrative interface access to known, trusted IP addresses and implement robust multi-factor authentication (MFA) to minimize the impact of compromised administrative credentials.

Immediate actions

Patch or upgrade IBM API Connect to a version beyond the affected ranges.

IT Operations 48h

Threat Hunt

Monitor API Connect web access logs for path traversal attempts (e.g., ../ sequences) directed at administrative endpoints.

T1210 high medium confidence hunt now

Data: Web access logs (cs-uri-stem, cs-uri-query)

Mitigations

Upgrade to the latest non-vulnerable version of IBM API Connect.

immediate IT Operations

CVE-2026-17147