CVE-2026-115456— Gcc: out-of-bounds read in std::from_chars

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 中发现一个漏洞。攻击者可以通过向 libstdc++ 库中的函数传入一个未以空字符（null-terminated）结尾的字符串，引发拒绝服务（DoS）攻击。该问题会导致超出已分配缓冲区的越界读取，可能引发无效数据解析或应用程序崩溃。

CVSS 3.7 · Low 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: out-of-bounds read in std::from_chars

Source: CVE Program / CVE List V5

Vulnerability Description

A flaw was found in gcc. An attacker could cause a Denial of Service (DoS) by passing a string that is not null-terminated to the std::from_chars() function in the libstdc++ library. This issue triggers an out-of-bounds read beyond the allocated buffer, potentially leading to invalid data parsing or an application crash.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

跨界内存读

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-2026-115456

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-115456

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Other References for CVE-2026-115456 (2)

https://access.redhat.com/security/cve/CVE-2026-115456 vdb-entry x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2563044 issue-tracking x_refsource_REDHAT

https://www.cve.org/CVERecord?id=CVE-2026-115456

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-2026-114690	6.2 MEDIUM	Gcc: confirmed out-of-bounds read/write in libstdc++ parallel `std
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-2026-118475	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-125