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Out-of-bounds read vulnerability in string formatting impacts Qt for MCUs

CVSS 4.0 8.8 HIGHCheck source for fixed versionsKEV status unknown

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-95509

Published

Strings optimized for Latin-1 displaying Latin-1 characters cause incorrect String.arg() formatting by an incorrect buffer size calculation, causing out-of-bounds reading.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-95509

Published

Qt for MCUs

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "qt",
                    "product": "Qt for MCUs",
                    "modules": [
                        "qul"
                    ],
                    "versions": [
                        {
                            "status": "affected",
                            "version": "2.6.0",
                            "lessThan": "2.11.3",
                            "versionType": "python"
                        },
                        {
                            "status": "affected",
                            "version": "2.12.0",
                            "lessThan": "2.12.3",
                            "versionType": "python"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

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Sources read 12 Nov 17:32 UTC · 274 of 275 readable · 272 fully read · documentation 469/469 current