Security Bulletin: AIX is vulnerable to denial of service due to zlib (CVE-2026-27171)

Summary A vulnerability in zlib could allow a remote attacker to cause a denial of service CVE-2026-27171. AIX uses zlib as part of its data compression functions. Vulnerability Details CVEID:CVE-2026-27171 DESCRIPTION: zlib before 1.3.2 allows CPU consumption via crc32combine64 and...

Vulnerabilities in Oracle database products

Oracle has identified 158 vulnerabilities in Oracle Database Server, APEX, Autonomous Health Framework, Essbase, Global Lifecycle Management, GoldenGate, NoSQL Database, Spatial Studio, SQLDeveloper, and TimesTen In-Memory Database. Of these vulnerabilities, 91 originate from third-party products...

AIX is vulnerable to denial of service due to zlib (CVE-2026-27171)

IBM SECURITY ADVISORY First Issued: Wed Jul 22 02:19:43 CDT 2026 The most recent version of this document is available here: https://aix.software.ibm.com/aix/efixes/security/zlibadvisory3.asc Security Bulletin: AIX is vulnerable to denial of service due to zlib CVE-2026-27171...

EulerOS Virtualization 2.10.1 : zlib (EulerOS-SA-2026-2843)

According to the versions of the zlib package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : zlib before 1.3.2 allows CPU consumption via crc32combine64 and crc32combinegen64 because x2nmodp can do right shifts within a loop th...

EulerOS 2.0 SP10 : zlib (EulerOS-SA-2026-2720)

According to the versions of the zlib packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : zlib before 1.3.2 allows CPU consumption via crc32combine64 and crc32combinegen64 because x2nmodp can do right shifts within a loop that has no...

EulerOS 2.0 SP10 : zlib (EulerOS-SA-2026-2679)

According to the versions of the zlib packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : zlib before 1.3.2 allows CPU consumption via crc32combine64 and crc32combinegen64 because x2nmodp can do right shifts within a loop that has no...

Security Bulletin: IBM MQ for HPE NonStop is vulnerable to an issue in zlib (CVE-2026-27171)

Summary IBM MQ for HPE NonStop is vulnerable to an issue in versions of zlib, due to excessive CPU consumption when inputs are not properly validated. Vulnerability Details CVEID:CVE-2026-27171 DESCRIPTION: zlib before 1.3.2 allows CPU consumption via crc32combine64 and crc32combinegen64 because...

Astra Linux – Vulnerability in zlib

Zlib before version 1.3.2 allowed CPU consumption through crc32combine64 and crc32combinegen64, because x2nmodp could perform right shifts within a loop without a termination condition...

Security Bulletin: Due to the use of zlib, IBM EntireX is vulnerable to Improper Validation of Specified Quantity in Input vulnerabilities (CVE-2026-3381, CVE-2026-27171).

Summary Due to the use of zlib, IBM EntireX is vulnerable to Improper Validation of Specified Quantity in Input vulnerabilities CVE-2026-3381, CVE-2026-27171. The version of zlib has been updated within IBM EntireX in order to address the vulnerabilities. Vulnerability Details CVEID:CVE-2026-3381...

EulerOS 2.0 SP11 : zlib (EulerOS-SA-2026-2233)

According to the versions of the zlib packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : zlib before 1.3.2 allows CPU consumption via crc32combine64 and crc32combinegen64 because x2nmodp can do right shifts within a loop that has no...

EulerOS Virtualization 2.13.1 : zlib (EulerOS-SA-2026-2155)

According to the versions of the zlib package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : zlib before 1.3.2 allows CPU consumption via crc32combine64 and crc32combinegen64 because x2nmodp can do right shifts within a loop th...

EulerOS Virtualization 2.12.1 : zlib (EulerOS-SA-2026-2092)

According to the versions of the zlib package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : zlib before 1.3.2 allows CPU consumption via crc32combine64 and crc32combinegen64 because x2nmodp can do right shifts within a loop th...

Security Bulletin: IBM i is Affected by an Improper Validation Vulnerability in zlib [CVE-2026-27171]

Summary Zlib for IBM i is vulnerable to increased CPU consumption when using functions crc32combine64 and crc32combine64gen64 CVE-2026-27171 as described in the vulnerability details section. Vulnerability Details CVEID:CVE-2026-27171 DESCRIPTION: zlib before 1.3.2 allows CPU consumption via...

Astra Linux – Vulnerability in zlib, libz-mingw-w64

Zlib versions up to 1.2.12 have a heap-based buffer over-read or buffer overflow issue in the inflate function within inflate.c, due to a large gzip header extra field. NOTE: Only applications that call inflateGetHeader are affected. Some common applications bundle the affected Zlib source code,...

JLSEC-2026-480 zlib before 1.3.2 allows CPU consumption via `crc32_combine64` and `crc32_combine_gen64` because...

zlib before 1.3.2 allows CPU consumption via crc32combine64 and crc32combinegen64 because x2nmodp can do right shifts within a loop that has no termination condition...

Amazon Linux 2023 : nodejs20, nodejs20-devel, nodejs20-full-i18n (ALAS2023-2026-1608)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1608 advisory. A flaw was found in zlib. An attacker providing specially crafted input to the crc32combine64 or crc32combinegen64 functions could trigger an infinite loop within the x2nmodp function. This leads to...

Amazon Linux 2023 : nodejs22, nodejs22-devel, nodejs22-full-i18n (ALAS2023-2026-1616)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1616 advisory. A flaw was found in zlib. An attacker providing specially crafted input to the crc32combine64 or crc32combinegen64 functions could trigger an infinite loop within the x2nmodp function. This leads to...

Amazon Linux 2023 : nodejs24, nodejs24-devel, nodejs24-full-i18n (ALAS2023-2026-1609)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1609 advisory. @isaacs/brace-expansion is a hybrid CJS/ESM TypeScript fork of brace-expansion. Prior to version 5.0.1, @isaacs/brace-expansion is vulnerable to a denial of service DoS issue caused by unbound...

zlib: zlib: Memory corruption via buffer overflow in Zlib::GzipReader

A flaw was found in zlib, a Ruby interface for the zlib compression/decompression library. The Zlib::GzipReader component contains a buffer overflow vulnerability. This occurs because the zstreambufferungets function does not ensure sufficient memory capacity before moving existing data, which ca...

CVE-2026-27820

A flaw was found in zlib, a Ruby interface for the zlib compression/decompression library. The Zlib::GzipReader component contains a buffer overflow vulnerability. This occurs because the zstreambufferungets function does not ensure sufficient memory capacity before moving existing data, which ca...