OESA-2026-3198 python-pyasn1 security update

Abstract Syntax Notation One ASN.1 is a technology for exchanging structured data in a universally understood, hardware agnostic way. Many industrial, security and telephony applications heavily rely on ASN.1. The pyasn1 library implements ASN.1 support in pure-Python. Security Fixes: pyasn1 is a...

UBUNTU-CVE-2026-15722

A stack buffer overflow flaw was found in 389 Directory Server 389-ds-base. The getruvelementfromberval function in repl5ruv.c copies digit characters from a network-supplied RUV berval into a fixed 16-byte stack buffer without bounds checking. A remote unauthenticated attacker can crash the LDAP...

CVE-2026-66349

The MMS server connection handler contains a flaw in its processing of BER-encoded request data. When an MMS confirmed request PDU containing an extended BER tag is received over an established session, the decoder may advance its internal buffer incorrectly due to a missing bounds check. This...

CVE-2026-63550

The CVE-2026-63550 issue affects the MMS BER decoder, where a boundary-handling flaw in processing certain fields of confirmed-request messages can cause the decoder to advance its read position incorrectly on receiving a BER-encoded element over an established MMS session (TCP port 102). This ma...

CVE-2026-63550 MZ Automation libiec61850 Out-of-bounds Read

The MMS BER decoder contains a boundary-handling flaw in the processing of certain fields within confirmed-request messages. When a crafted BER-encoded element is received over an established MMS session TCP port 102, the decoder may advance its internal read position incorrectly, leading to a he...

CVE-2026-65421

CVE-2026-65421 affects the MMS BER decoder in the MMS/IEC 61850 stack (as noted in NVD and CVE lists). The flaw is an attacker-supplied length for fixed-width BER fields (boolean/integer) that is not validated, causing a read past the end of a heap buffer. This results in termination of the MMS s...

CVE-2026-66349

The CVE-2026-66349 entry concerns the MMS server connection handler. A flaw in processing BER-encoded request data occurs when an MMS confirmed request PDU with an extended BER tag is received over an established session, where a missing bounds check can cause the decoder to advance its internal ...

SUSE SLED15 / SLES15 Security Update : python-pyasn1 (SUSE-SU-2026:3238-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3238-1 advisory. - CVE-2026-59884: BER/CER/DER decoder denial of service via unbounded long-form tag IDs bsc1271464. -...

SUSE CVE-2026-64448

In the Linux kernel, the following vulnerability has been resolved: smb: client: restrict implied bcc0 exemption to responses without data area smb2checkmessage has a long-standing quirk that accepts a response whose calculated length is one byte larger than the bytes actually received "server ca...

CVE-2026-64448

Summary (CVE-2026-64448): The Linux kernel fix addresses a SMB2 negotiation bug in CIFS/NTLM handling. A long-standing quirk in smb2_check_message() unconditionally granted a +1 length exemption for responses, even when a data area was present. This could cause the decoder to read past the receiv...

openSUSE 16 Security Update : python-pyasn1 (openSUSE-SU-2026:21392-1)

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21392-1 advisory. - CVE-2026-59884: BER/CER/DER decoder denial of service via unbounded long-form tag IDs bsc1271464. - CVE-2026-59885: quadratic complexity in...

pyasn1: Uncontrolled resource consumption when converting decoded REAL values

Impact The univ.Real type converted its mantissa, base, exponent value to a Python float using exact big-integer exponentiation. A BER/CER/DER-encoded REAL value only a few bytes long can carry a very large exponent, causing this computation to attempt to materialize an astronomically large...

GHSA-M4P7-R5RC-7G4J pyasn1 BER/CER/DER decoder denial of service via unbounded long-form tag IDs

Impact The BER decoder shared by the CER and DER codecs parses long-form tags by accumulating continuation octets in a loop with no upper bound on the size of the tag ID. A crafted input can force the decoder to build an arbitrarily large integer, with CPU cost growing quadratically in input size...

pyasn1 BER/CER/DER decoder denial of service via unbounded long-form tag IDs

Impact The BER decoder shared by the CER and DER codecs parses long-form tags by accumulating continuation octets in a loop with no upper bound on the size of the tag ID. A crafted input can force the decoder to build an arbitrarily large integer, with CPU cost growing quadratically in input size...

Linux Distros Unpatched Vulnerability : CVE-2026-59884

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the BER decoder shared by the CER and DER codecs parses long-form tags by accumulating continuatio...

SUSE CVE-2026-59884

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the BER decoder shared by the CER and DER codecs parses long-form tags by accumulating continuation octets without an upper bound on the tag ID size, allowing a crafted input to force construction of an arbitrarily large integer with C...

PYSEC-2026-3457

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the univ.Real type converted its mantissa, base, and exponent value to a Python float using exact big-integer exponentiation. A BER, CER, or DER encoded REAL value only a few bytes long can carry a very large exponent, causing float...

PYSEC-2026-3455

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the BER decoder shared by the CER and DER codecs parses long-form tags by accumulating continuation octets without an upper bound on the tag ID size, allowing a crafted input to force construction of an arbitrarily large integer with C...

UBUNTU-CVE-2026-59884

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the BER decoder shared by the CER and DER codecs parses long-form tags by accumulating continuation octets without an upper bound on the tag ID size, allowing a crafted input to force construction of an arbitrarily large integer with C...

CVE-2026-59884

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the BER decoder shared by the CER and DER codecs parses long-form tags by accumulating continuation octets without an upper bound on the tag ID size, allowing a crafted input to force construction of an arbitrarily large integer with C...