CVE-2026-102692

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Source
https://cve.org/CVERecord?id=CVE-2026-102692
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102692.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-102692
Aliases
  • GHSA-8365-gj33-rgpf
Published
2026-10-16T16:48:35Z
Modified
2026-11-07T07:05:06Z
Severity
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H CVSS Calculator
Summary
RIOT: Potential integer overflow in nanocoap Block2 handling leading to out-of-bounds memory access
Details

RIOT is an open-source microcontroller operating system designed for Internet of Things devices and other embedded systems. Prior to 2026.07, nanocoap accepts oversized CoAP Block2 option values without enforcing the 20-bit maximum block number, allowing block offset multiplication to overflow on 32-bit targets. The affected master baseline is commit aeeae69e; the verified fix is later on master and remains unreleased. The oversized value passes from coap_get_blockopt() to coap_block_slicer_init(). A remote CoAP client can send a malformed Block2 option that produces an invalid slice range and can cause out-of-bounds memory access, denial of service, or memory corruption. This vulnerability is fixed in 2026.07.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-190",
        "CWE-787"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102692.json"
}
References

Affected packages

Git / github.com/riot-os/riot

Affected ranges

Type
GIT
Repo
https://github.com/riot-os/riot
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
50ae2eba8fe3c533539e68f1a64fd34d66c8d14b
Fixed
6b283ace3565d931b3edff7e115d4f79339253b8
Fixed
ee1fa0ef91874494823d476392572aeefdbc6b74
Fixed
a897b0498f635654f091bf9f33e9696aa773e886
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "2026.07"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "6b283ace3565d931b3edff7e115d4f79339253b8"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "range": [
                {
                    "fixed": "ee1fa0ef91874494823d476392572aeefdbc6b74"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "2026.07",
            "range": [
                {
                    "fixed": "a897b0498f635654f091bf9f33e9696aa773e886"
                }
            ],
            "source": "REFERENCES_TAG"
        }
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}

Affected versions

2013.*
2013.08
2014.*
2014.01
2014.05
2014.12
2015.*
2015.09-RC1
2015.12-RC1
2015.12-devel
2016.*
2016.03-devel
2016.04-RC1
2016.07-RC1
2016.07-RC2
2016.07-devel
2016.10-RC1
2016.10-devel
2017.*
2017.01-RC1
2017.01-devel
2017.04-RC1
2017.04-devel
2017.07-RC1
2017.07-devel
2017.10-RC1
2017.10-devel
2018.*
2018.01-RC1
2018.01-devel
2018.04-RC1
2018.04-devel
2018.07-RC1
2018.07-devel
2018.10-RC1
2018.10-devel
2019.*
2019.01-RC1
2019.01-devel
2019.04-RC1
2019.04-devel
2019.07-RC1
2019.07-devel
2019.10-RC1
2019.10-devel
2020.*
2020.01-RC1
2020.01-devel
2020.04-RC1
2020.04-devel
2020.07-RC1
2020.07-devel
2020.10-RC1
2020.10-devel
2021.*
2021.01-RC1
2021.01-devel
2021.04-RC1
2021.04-devel
2021.07-RC1
2021.07-devel
2021.10-RC1
2021.10-devel
2022.*
2022.01-RC1
2022.01-devel
2022.04-RC1
2022.04-devel
2022.07-RC1
2022.07-devel
2022.10-RC1
2022.10-devel
2023.*
2023.01-RC1
2023.01-devel
2023.04-RC1
2023.04-devel
2023.07-RC1
2023.07-devel
2023.10-RC1
2023.10-devel
2024.*
2024.01-RC1
2024.01-devel
2024.04
2024.04-RC1
2024.04-devel
2024.07-RC1
2024.07-devel
2024.10-RC1
2024.10-devel
2025.*
2025.01-RC1
2025.01-devel
2025.04-RC1
2025.04-devel
2025.07-RC1
2025.07-devel
2025.10-RC1
2025.10-devel
2026.*
2026.01-RC1
2026.01-devel
2026.04-devel

Database specific

source 
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vanir_signatures_modified 
"2026-11-07T07:05:06Z"