SB2026100102 - Multiple vulnerabilities in IBM DataPower Gateway
Published: October 1, 2026 Updated: October 1, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Use-after-free (CVE-ID: CVE-2026-42014)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to use-after-free in gnutls_pkcs11_token_set_pin() when changing the Security Officer PIN with oldpin set to NULL for a token lacking a protected authentication path. A remote attacker can trigger the vulnerable function call to cause a denial of service.
2) Improper Certificate Validation (CVE-ID: CVE-2026-3832)
CWE-ID: CWE-295 - Improper Certificate Validation
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass certificate revocation checks.
The vulnerability exists due to improper certificate status validation in OCSP response processing when validating a certificate against a multi-entry OCSP response. A remote attacker can supply a certificate status response with multiple entries to bypass certificate revocation checks.
3) Information Exposure Through Timing Discrepancy (CVE-ID: CVE-2026-5419)
CWE-ID: CWE-208 - Information Exposure Through Timing Discrepancy
CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to observable timing discrepancy in PKCS#7 padding check during decryption when processing ciphertext. A remote attacker can send specially crafted ciphertext to disclose sensitive information.
Remediation
Install update from vendor's website.