Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS : pyasn1 vulnerabilities (USN-8712-1)

The remote Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8712-1 advisory. It was discovered that pyasn1 did not properly bound the size of long-form tag identifiers when parsing BER, CER, or DER encoded...

EulerOS 2.0 SP11 : python-pyasn1 (EulerOS-SA-2026-4279)

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...

EulerOS 2.0 SP13 : python-pyasn1 (EulerOS-SA-2026-4188)

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...

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...

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 ...

pyasn1: pyasn1: Denial of Service via crafted ASN.1 REAL values

A remote attacker can exploit this by providing specially crafted BER/CER/DER-encoded ASN.1 data with a large exponent in the REAL value. When the application subsequently prints, logs, compares, or performs arithmetic on the decoded value, this can cause excessive CPU and memory consumption,...

CVE-2025-15684

A vulnerability was detected in Open5GS up to 2.7.6. Affected is the function diamlogfunc of the file lib/diameter/common/init.c of the component CER Handler. The manipulation results in reachable assertion. The attack can be executed remotely. The exploit is now public and may be used. Upgrading...

CVE-2025-15684 Open5GS CER init.c diam_log_func assertion

A vulnerability was detected in Open5GS up to 2.7.6. Affected is the function diamlogfunc of the file lib/diameter/common/init.c of the component CER Handler. The manipulation results in reachable assertion. The attack can be executed remotely. The exploit is now public and may be used. Upgrading...

CVE-2025-15684

A vulnerability was detected in Open5GS up to 2.7.6. Affected is the function diamlogfunc of the file lib/diameter/common/init.c of the component CER Handler. The manipulation results in reachable assertion. The attack can be executed remotely. The exploit is now public and may be used. Upgrading...

EUVD-2025-210701

A vulnerability was detected in Open5GS up to 2.7.6. Affected is the function diamlogfunc of the file lib/diameter/common/init.c of the component CER Handler. The manipulation results in reachable assertion. The attack can be executed remotely. The exploit is now public and may be used. Upgrading...

CVE-2025-15684 Open5GS CER init.c diam_log_func assertion

A vulnerability was detected in Open5GS up to 2.7.6. Affected is the function diamlogfunc of the file lib/diameter/common/init.c of the component CER Handler. The manipulation results in reachable assertion. The attack can be executed remotely. The exploit is now public and may be used. Upgrading...

CVE-2025-15684

Open5GS (affected up to 2.7.6) is vulnerable via diam_log_func in lib/diameter/common/init.c (CER Handler). The issue allows a remote attacker to trigger a reachable assertion. Public exploit appears available. Remediation: upgrade to Open5GS 2.7.7, which includes patch c1a803516a3c0485696cb9bcca...

CVE-2025-15684 Open5GS CER init.c diam_log_func assertion

A vulnerability was detected in Open5GS up to 2.7.6. Affected is the function diamlogfunc of the file lib/diameter/common/init.c of the component CER Handler. The manipulation results in reachable assertion. The attack can be executed remotely. The exploit is now public and may be used. Upgrading...

CVE-2025-15684: Reachable Assertion

A vulnerability was detected in Open5GS up to 2.7.6. Affected is the function diamlogfunc of the file lib/diameter/common/init.c of the component CER Handler. The manipulation results in reachable assertion. The attack can be executed remotely. The exploit is now public and may be used. Upgrading...

PT-2026-70972

Name of the Vulnerable Software and Affected Versions Open5GS versions prior to 2.7.7 Description A remote attack can trigger a reachable assertion within the CER Handler component. The issue resides in the diam log func function located in the lib/diameter/common/init.c file. Recommendations...

pyasn1: pyasn1: Denial of Service via crafted ASN.1 REAL values

A remote attacker can exploit this by providing specially crafted BER/CER/DER-encoded ASN.1 data with a large exponent in the REAL value. When the application subsequently prints, logs, compares, or performs arithmetic on the decoded value, this can cause excessive CPU and memory consumption,...

pyasn1: pyasn1: Denial of Service via crafted ASN.1 REAL values

A remote attacker can exploit this by providing specially crafted BER/CER/DER-encoded ASN.1 data with a large exponent in the REAL value. When the application subsequently prints, logs, compares, or performs arithmetic on the decoded value, this can cause excessive CPU and memory consumption,...

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...

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...

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...