Security Vulnerabilities
Improper Certificate Validation vulnerability in Erlang OTP public_key (pubkey_ocsp module) allows forged OCSP responses signed with an expired responder certificate to be accepted as valid.
OCSP response verification in pubkey_ocsp:verify_response/5 and pubkey_ocsp:is_authorized_responder/3 in lib/public_key/src/pubkey_ocsp.erl does not check the validity period (notBefore/notAfter) of the OCSP responder certificate. An attacker who has obtained the private key of an expired CA-designated OCSP responder certificate can forge OCSP responses that Erlang/OTP accepts as valid.
This affects TLS clients using OCSP stapling via the ssl application: a malicious or compromised server can present a revoked TLS certificate together with a forged OCSP response signed by an expired responder key, and the client will accept the revoked certificate as valid. It also affects applications calling public_key:pkix_ocsp_validate/5 directly, where the impact depends on the use case — server-side client certificate validation using this API may allow authentication bypass with a revoked client certificate.
This issue affects OTP from OTP 27.0 before OTP 27.3.4.12, 28.5.0.1, and 29.0.1 corresponding to public_key from 1.16 before 1.17.1.3, 1.20.3.1, and 1.21.1.
CVSS Score
6.3
EPSS Score
0.001
Published
2026-05-27
IBM Netezza Performance Server Replication Services 3.0.2.0 through 3.0.5.0 allows an attacker with low‑privileged access to escalate their privileges to root. By exploiting this flaw, the attacker can execute root‑level commands, obtain a root shell, and change the root user’s password. Successful exploitation also enables modification or removal of system‑wide files and the installation of persistent backdoors. This results in full system compromise with complete loss of confidentiality, integrity, and availability.
CVSS Score
7.8
EPSS Score
0.0
Published
2026-05-27
IBM Cloud APM, Base Private 8.1.4 and IBM Cloud APM, Advanced Private 8.1.4 IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) could allow an authenticated user to cause a denial of service due to improper neutralization of special elements in the data query logic of the Fenced environment.
CVSS Score
6.5
EPSS Score
0.001
Published
2026-05-27
IBM InfoSphere Optim Test Data Fabrication 1.0.0, 1.0.0.1, 1.0.0.2, 1.0.2, 1.0.2.2, 1.0.2.3, 1.0.2.4, 1.0.2.5, 1.0.2.6, 1.0.2.7 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system
CVSS Score
7.5
EPSS Score
0.001
Published
2026-05-27
A flaw was found in Samba’s handling of NTFS-style reparse points on shares configured with read only = yes. Due to missing SMB-layer access checks, authenticated users with underlying filesystem write permissions may create or delete reparse point metadata through SMB operations even on read-only exports. This could allow modification of SMB-visible file behavior, including converting files into symbolic links or other reparse point types.
CVSS Score
7.1
EPSS Score
0.0
Published
2026-05-27
libusb before version 1.0.30 contains a NULL pointer dereference vulnerability that allows attackers to crash applications by supplying a malformed USB configuration descriptor where an interface claims bNumEndpoints greater than zero but is followed by a class-specific descriptor whose bLength exceeds the remaining buffer size, causing parse_interface() to return early without allocating the endpoint array. Attackers can exploit this flaw through libusb_get_active_config_descriptor or libusb_get_config_descriptor by providing crafted descriptors via virtualized USB passthrough, file-based descriptor parsing, or network sources, causing any application iterating over endpoints to dereference a NULL endpoint pointer and crash.
CVSS Score
6.9
EPSS Score
0.0
Published
2026-05-27
A flaw was found in Samba’s vfs_worm module. The module is intended to provide write-once, read-many (WORM) protections by preventing modification of files after a configurable grace period. Due to insufficient validation during rename operations, an authenticated user with write access to a share could overwrite a protected file by renaming a newly created file over the existing WORM-protected file.
CVSS Score
6.5
EPSS Score
0.0
Published
2026-05-27
IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to a denial of service with a specially crafted query when autonomous transactions are enabled.
CVSS Score
7.1
EPSS Score
0.0
Published
2026-05-27
IBM Cognos Analytics 11.2.0, 11.2.4, 12.0, and 12.1.0 and IBM Cognos Transformer 11.2.4, 12.0, and 12.1.0 are vulnerable to cross-site scripting (XSS). This vulnerability allows a remote attacker to inject arbitrary JavaScript code into the web user interface, which may alter the intended functionality and could lead to the disclosure of credentials within a trusted session.
CVSS Score
5.4
EPSS Score
0.0
Published
2026-05-27
IBM SDI 7.2.0.0 through 7.2.0.14 and IBM Security Directory Integrator 10.0.0.0 through 10.0.0.2 could allow a remote attacker to obtain sensitive information when a detailed technical error message is returned in the browser. This information could be used in further attacks against the system.
CVSS Score
5.3
EPSS Score
0.0
Published
2026-05-27