Astra Linux – vulnerability in pyasn1

PyASN1 is a generic ASN.1 library for Python. Prior to version 0.6.4, the BER decoder used by both CER and DER decoders parsed long-form tags by accumulating continuation octets without any upper limit on the tag ID size. This allowed maliciously crafted inputs to force the creation of arbitraril...

Pyasn1 Has Quadratic CPU Consumption In Constructed BIT STRING Decoding

Summary In pyasn1 through 0.6.4, decoding a constructed BIT STRING with many fragments repeatedly shifts and copies the entire value accumulated so far. For fixed-size fragments, CPU time grows quadratically with the encoded input size. An application that passes sufficiently large,...

GHSA-2QM8-X737-GMW5 pyasn1 has quadratic CPU consumption in constructed BIT STRING decoding

Summary In pyasn1 through 0.6.4, decoding a constructed BIT STRING with many fragments repeatedly shifts and copies the entire value accumulated so far. For fixed-size fragments, CPU time grows quadratically with the encoded input size. An application that passes sufficiently large,...

EulerOS 2.0 SP11 : python-pyasn1 (EulerOS-SA-2026-4369)

According to the versions of the python-pyasn1 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : 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 Pyth...

MGASA-2026-0380 Updated python-pyasn1 packages fix security vulnerabilities

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 — a 1 ...

Updated python-pyasn1 packages fix security vulnerabilities

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 — a 1 ...

PT-2026-95219

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 — a 1 ...

Security Bulletin: IBM Maximo Application Suite - Location Service for Esri Component uses pyasn1-0.6.3 which is vulnerable to CVE-2026-59884, CVE-2026-59885, CVE-2026-59886

Summary IBM Maximo Application Suite - Location Service for Esri Component uses pyasn1-0.6.3 which is vulnerable to CVE-2026-59884, CVE-2026-59885, CVE-2026-59886. This bulletin contains information regarding these vulnerabilities and their fixtures. Vulnerability Details CVEID:CVE-2026-59884...

Security Bulletin: IBM Integrated Analytics System (IIAS) is affected by multiple uncontrolled resource consumption vulnerabilities due to pyasn1

Summary pyasn1 is used by IBM Integrated Analytics System as a generic ASN.1 library for Python, providing encoding and decoding of ASN.1 data structures. Multiple vulnerabilities affect pyasn1 versions prior to 0.6.4. CVE-2026-59884 involves the BER decoder accumulating long-form tag continuatio...

Security Bulletin:Vulnerability in pyasn1 affects IBM Netezza Appliance

Summary The pyasn1 package is used by IBM Netezza Appliance. IBM Netezza Appliance has addressed the applicable CVEsCVE-2026-59884, CVE-2026-59885, CVE-2026-59886 Vulnerability Details CVEID:CVE-2026-59884 DESCRIPTION: pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the BER decoder...

SUSE-SU-2026:23167-1 Security update for python-pyasn1

This update for python-pyasn1 fixes the following issues: - CVE-2026-59884: BER/CER/DER decoder denial of service via unbounded long-form tag IDs bsc1271464. - CVE-2026-59885: Quadratic complexity in OBJECT IDENTIFIER and RELATIVE-OID processing allows denial of service bsc1271465. -...

Important: python-pyasn1

Issue Overview: 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 larg...

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-2026-63550

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-2026-63550

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-2026-63550 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

The MMS BER decoder contains a flaw in decoding fixed-width BER fields boolean/integer: an attacker-supplied length value is not validated, causing a read past the end of a heap buffer. This leads to termination of the MMS service process and a denial-of-service condition...

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-2026-65421: Out-of-bounds Read

The MMS BER decoder contains a flaw in decoding fixed-width BER fields boolean/integer: an attacker-supplied length value is not validated, causing a read past the end of a heap buffer. This leads to termination of the MMS service process and a denial-of-service condition...

CVE-2026-63550: 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...