SB2026092934 - Multiple vulnerabilities in IBM Guardium Cryptography Manager

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Main Vulnerability Database SB2026092934

SB2026092934 - Multiple vulnerabilities in IBM Guardium Cryptography Manager

Published: September 29, 2026 Updated: September 30, 2026

Security Bulletin ID SB2026092934
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 vulnerabilities.


1) Insufficient verification of data authenticity (CVE-ID: CVE-2026-12817)

CWE-ID: CWE-345 - Insufficient Verification of Data Authenticity

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to tamper with decrypted OpenPGP data.

The vulnerability exists due to improper authentication tag validation in OpenPGP AEAD decryption when processing chunk-aligned data. A remote attacker can supply crafted encrypted data to tamper with decrypted OpenPGP data.


2) Observable discrepancy (CVE-ID: CVE-2026-59640)

CWE-ID: CWE-203 - Observable discrepancy

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to recover information about encrypted OpenPGP data.

The vulnerability exists due to an oracle exposure in OpenPGP CFB quick-check processing when handling symmetric and session-key paths. A remote attacker can submit crafted encrypted data to recover information about encrypted OpenPGP data.


3) Resource exhaustion (CVE-ID: CVE-2026-59648)

CWE-ID: CWE-400 - Resource exhaustion

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 uncontrolled resource consumption in OpenPGP Argon2 S2K processing when honoring attacker-chosen memory and passes. A remote attacker can supply crafted OpenPGP data to cause a denial of service.


4) Uncontrolled Memory Allocation (CVE-ID: CVE-2026-59649)

CWE-ID: CWE-789 - Uncontrolled Memory Allocation

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 uncontrolled memory allocation in OpenPGP user-attribute subpacket parsing when processing a length bounded only by JVM max memory. A remote attacker can supply a crafted subpacket to cause a denial of service.


5) Uncontrolled Recursion (CVE-ID: CVE-2026-59645)

CWE-ID: CWE-674 - Uncontrolled Recursion

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 uncontrolled recursion in the OER parser when processing a self-referential IEEE 1609.2 schema without a depth limit. A remote attacker can supply crafted schema data to cause a denial of service.

The issue is triggered by self-referential IEEE 1609.2 schema content.


Remediation

Install update from vendor's website.

References