CVE-2021-26706

highPriorität · verfolgen · 40EPSS 0.019 · 80. PerzentilEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.94% (80th) EPSS

CVSS 7.5 · high

Is it mine?

64 products

Prüfe deine Angriffsfläche

Who says so?

3 sources

cnnvd · enisa_euvd · cisa_csaf_ot

EPSS · bewertet 2026-10-27

An issue was discovered in lib_mem.c in Micrium uC/OS uC/LIB 1.38.x and 1.39.00. The following memory allocation functions do not check for integer overflow when allocating a pool whose size exceeds the address space: Mem_PoolCreate, Mem_DynPoolCreate, and Mem_DynPoolCreateHW. Because these functions use multiplication to calculate the pool sizes, the operation may cause an integer overflow if the arguments are large enough. The resulting memory pool will be smaller than expected and may be exploited by an attacker.

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Noch kein Hersteller-Fix; eine Mitigation ist verfügbar.

MitigationARM CMSIS-RTOS2cisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationARM Mbed OScisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationARM mbed-ualloccisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationAmazon FreeRTOScisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationApache Nuttx OScisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationBlackBerry QNX OS for Medicalcisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationBlackBerry QNX OS for Safetycisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationBlackBerry QNX SDPcisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationCesanta Software Mongoose OScisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationGoogle Cloud IoT Device SDKcisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationMedia Tek LinkIt SDKcisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationMicrium OScisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationMicrium uC/OScisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationNXP MCUXpresso SDKcisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationNXP MQXcisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationRIOT OScisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationRedhat newlibcisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationSamsung Tizen RT RTOScisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationTencentOS-tinycisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationTexas Instruments CC32XXcisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationTexas Instruments SimpleLinkcisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationTexas Instruments SimpleLink-CC13XXcisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationTexas Instruments SimpleLink-CC26XXcisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationTexas Instruments SimpleLink-CC32XXcisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationUclibc-NGcisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationWindriver VxWorkscisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationZephyr Project RTOScisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr
MitigationeCosCentric eCosPro RTOScisa_csaf_ot
Zephyr Project: Update to 2.5 or later. Patches available for prior supported versions. See the Zephyr security advisory for more information.
https://github.com/zephyrproject-rtos/zephyr

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

9.8

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USAusnutzbarkeit 10 · Auswirkung 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 5.9

v3.09criticalCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · CISA US

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-190USprimärCWE-190US

betroffene Produkte (64)

Betroffene Produkte und Versionsbereiche.

ARM CMSIS-RTOS2: versions prior to 2.1.3alle Versionencisa_csaf_otUS
ARM Mbed OS: Version 6.3.0alle Versionencisa_csaf_otUS
ARM mbed-ualloc: Version 1.3.0alle Versionencisa_csaf_otUS
Amazon FreeRTOS: Version 10.4.1alle Versionencisa_csaf_otUS
Apache Nuttx OS: Version 9.1.0alle Versionencisa_csaf_otUS
BlackBerry QNX OS for Medical: Versions 1.1 and earlier safety products compliant with IEC 62304alle Versionencisa_csaf_otUS
BlackBerry QNX OS for Safety: Versions 1.0.1 and earlier safety products compliant with IEC 61508 and/or ISO 26262alle Versionencisa_csaf_otUS
BlackBerry QNX SDP: Versions 6.5.0 SP1 and earlieralle Versionencisa_csaf_otUS
Cesanta Software Mongoose OS: v2.17.0alle Versionencisa_csaf_otUS
Google Cloud IoT Device SDK: Version 1.0.2alle Versionencisa_csaf_otUS
Media Tek LinkIt SDK: versions prior to 4.6.1alle Versionencisa_csaf_otUS
Micrium OS: Versions 5.10.1 and prioralle Versionencisa_csaf_otUS
Micrium uC/OS: uC/LIB Versions 1.38.xx Version 1.39.00alle Versionencisa_csaf_otUS
NXP MCUXpresso SDK: versions prior to 2.8.2alle Versionencisa_csaf_otUS
NXP MQX: Versions 5.1 and prioralle Versionencisa_csaf_otUS
RIOT OS: Version 2020.01.1alle Versionencisa_csaf_otUS
Redhat newlib: versions prior to 4.0.0alle Versionencisa_csaf_otUS
Samsung Tizen RT RTOS: versions prior 3.0.GBBalle Versionencisa_csaf_otUS
TencentOS-tiny: Version 3.1.0alle Versionencisa_csaf_otUS
Texas Instruments CC32XX: versions prior to 4.40.00.07alle Versionencisa_csaf_otUS

20 von 64 angezeigt

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

ICSA-21-119-04Multiple RTOS (Update E)2021-04-29icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could result in unexpected behavior such as a crash or a remote code injection/execution.

auch bekannt als (3)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd cisa_csaf_ot NVD CVE.org MITRE

veröffentlicht 2022-01-24geändert 2026-06-17

verwandt (4,653)

Verwandte Einträge.

ID	Schweregrad	EPSS	ausnutzbar	veröffentlicht
CVE-2025-48595US	—OT kritisch	1.95% (80th)	KEV	2026-06-01
In multiple locations, there is a possible way to achieve code execution due to an integer overflow. This could lead to local escalation of privilege with no additional execution p…
CVE-2026-21385US	—OT kritisch	1.29% (70th)	KEV	2026-03-02
Memory corruption while using alignments for memory allocation.
CVE-2025-24985US	—OT kritisch	3.89% (90th)	KEV	2025-03-11
Integer overflow or wraparound in Windows Fast FAT Driver allows an unauthorized attacker to execute code locally.
CVE-2024-38080US	—OT kritisch	7.12% (94th)	KEV	2024-07-09
Windows Hyper-V Elevation of Privilege Vulnerability
CVE-2023-33107US	high7.8OT kritisch	0.74% (54th)	KEV	2023-12-05
Memory corruption in Graphics Linux while assigning shared virtual memory region during IOCTL call.

+4648 weitere

Referenzen (13)

Externe Belege — Patches, Meldungen, Analysen.

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