CVE-2026-114690— Gcc: confirmed out-of-bounds read/write in libstdc++ parallel `std

Quick assessment

Affected

Red Hat Red Hat Enterprise Linux 10

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 GCC 中发现了一个漏洞。由于内部缓冲区尺寸不足，libstdc++ 的并行搜索实现中存在越界内存访问漏洞。本地攻击者可通过向以并行模式编译的应用程序提供精心构造的搜索数据来利用该漏洞，导致进程崩溃，进而引发拒绝服务（DoS）攻击。

CVSS 6.2 · Medium Updated Oct 30, 2026

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

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Vulnerability Information

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Vulnerability Title

Gcc: confirmed out-of-bounds read/write in libstdc++ parallel `std

Source: CVE Program / CVE List V5

Vulnerability Description

A flaw was found in GCC. An out-of-bounds memory access vulnerability exists in the libstdc++ parallel search implementation due to an undersized internal buffer. A local attacker can exploit this flaw by providing crafted search data to an application compiled with parallel mode, causing the process to crash and leading to a Denial of Service (DoS).

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

跨界内存写

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE
Red Hat	Red Hat Enterprise Linux 10	-	`cpe:/o:redhat:enterprise_linux:10`
Red Hat	Red Hat Enterprise Linux 10	-	`cpe:/o:redhat:enterprise_linux:10`
Red Hat	Red Hat Enterprise Linux 10	-	`cpe:/o:redhat:enterprise_linux:10`
Red Hat	Red Hat Enterprise Linux 10	-	`cpe:/o:redhat:enterprise_linux:10`
Red Hat	Red Hat Enterprise Linux 6	-	`cpe:/o:redhat:enterprise_linux:6`
Red Hat	Red Hat Enterprise Linux 6	-	`cpe:/o:redhat:enterprise_linux:6`
Red Hat	Red Hat Enterprise Linux 6	-	`cpe:/o:redhat:enterprise_linux:6`
Red Hat	Red Hat Enterprise Linux 6	-	`cpe:/o:redhat:enterprise_linux:6`
Red Hat	Red Hat Enterprise Linux 6	-	`cpe:/o:redhat:enterprise_linux:6`
Red Hat	Red Hat Enterprise Linux 7	-	`cpe:/o:redhat:enterprise_linux:7`
Red Hat	Red Hat Enterprise Linux 7	-	`cpe:/o:redhat:enterprise_linux:7`
Red Hat	Red Hat Enterprise Linux 7	-	`cpe:/o:redhat:enterprise_linux:7`
Red Hat	Red Hat Enterprise Linux 7	-	`cpe:/o:redhat:enterprise_linux:7`
Red Hat	Red Hat Enterprise Linux 8	-	`cpe:/o:redhat:enterprise_linux:8`
Red Hat	Red Hat Enterprise Linux 8	-	`cpe:/o:redhat:enterprise_linux:8`
Red Hat	Red Hat Enterprise Linux 8	-	`cpe:/o:redhat:enterprise_linux:8`
Red Hat	Red Hat Enterprise Linux 8	-	`cpe:/o:redhat:enterprise_linux:8`
Red Hat	Red Hat Enterprise Linux 9	-	`cpe:/o:redhat:enterprise_linux:9`
Red Hat	Red Hat Enterprise Linux 9	-	`cpe:/o:redhat:enterprise_linux:9`
Red Hat	Red Hat Enterprise Linux 9	-	`cpe:/o:redhat:enterprise_linux:9`
Red Hat	Red Hat Enterprise Linux 9	-	`cpe:/o:redhat:enterprise_linux:9`
Red Hat	Red Hat Enterprise Linux 9	-	`cpe:/o:redhat:enterprise_linux:9`
Red Hat	Red Hat Hardened Images	-	`cpe:/a:redhat:hummingbird:1`
Red Hat	Red Hat Hardened Images	-	`cpe:/a:redhat:hummingbird:1`
Red Hat	Red Hat OpenShift Container Platform 4	-	`cpe:/a:redhat:openshift:4`
Red Hat	Red Hat OpenShift Container Platform 4	-	`cpe:/a:redhat:openshift:4`
Red Hat	Red Hat OpenShift Container Platform 5	-	`cpe:/a:redhat:openshift:5`

II. Public POCs for CVE-2026-114690

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-114690

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Other References for CVE-2026-114690 (2)

https://access.redhat.com/security/cve/CVE-2026-114690 vdb-entry x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2478652 issue-tracking x_refsource_REDHAT

https://www.cve.org/CVERecord?id=CVE-2026-114690

Same Patch Batch · Red Hat · 2026-10-30 · 13 CVEs total

CVE-2026-103963	7.5 HIGH	Glib-networking: unbounded tls 1.3 session ticket queue growth in glib-networking allows r
CVE-2026-115455	6.5 MEDIUM	Gcc: stack overflow in std::bitset on libstdc++
CVE-2026-118952	6.5 MEDIUM	Kroxylicious-authorizer-acl: kroxylicious: acl prefix matching can bypass authorization ru
CVE-2026-91920	6.5 MEDIUM	Undertow: undertow: chunkreader message length permits chunk-size overflow
CVE-2026-114691	5.9 MEDIUM	Gcc: integer wrap in `std
CVE-2026-118593	5.9 MEDIUM	Kernel: local_bh imbalance in seg6_input_core() drop path (incomplete fix for cve-2026-460
CVE-2026-110133	5.8 MEDIUM	Ghostscript: heap buffer overflow in ghostscript truetype outliner due to npointstotal int
CVE-2026-118959	5.4 MEDIUM	Keycloak-services: keycloak-services: required actions bypassed via kc_action parameter
CVE-2026-118947	4.3 MEDIUM	Keycloak-services: keycloak-services: authorization bypass via uma resource registration i
CVE-2026-115456	3.7 LOW	Gcc: out-of-bounds read in std::from_chars
CVE-2026-118475	3.6 LOW	Eog: eye of gnome: buffer overrun when parsing malicious png files with non-standard iccp
CVE-2026-112922	3.3 LOW	Ghostscript: out-of-bounds read in ghostscript shade_next_color via integer overflow of in

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10

Same vendor: Red Hat

Same weakness: CWE-787