CVSS 4.0
7.0 highCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:NCVE-2026-115653
High (7.0). EPSS 0.1% estimated probability of exploitation activity in the next 30 days.
In Eclipse ThreadX versions 6.0.1 through 6.5.2.202603, the PendSV handler of the Cortex-M module ports saves a preempted user-mode module thread's registers in privileged mode at addresses taken from the thread's stack pointer, without checking that pointer against the thread's stack. A user-mode, memory-protected module can thereby write up to nine words, eight of its choosing, or 25 with floating-point state, into memory immediately below any region it may write, and read back what is stored there.
Severity
- EPSS
- 0.1% estimated probability of exploitation activity in the next 30 days; 4th percentile. Scored 2026-11-03. A forecast for this CVE across the internet, not for your own systems.
- Published
- Modified
- Record from
- the NVD, synced
Ask an AI about this CVE
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Explain CVE-2026-115653 for an engineer deciding whether to act. Use https://cve.bz/api/public/cves/CVE-2026-115653?via=ask-ai-copy and https://cve.bz/cve/CVE-2026-115653?via=ask-ai-copy as the source of truth: what is affected and which versions fix it, whether it is in CISA KEV, public exploits, and its EPSS (an internet-wide 30-day estimate of exploitation activity, not a forecast for my systems). If they give no fixed versions, use the CVE record https://cveawg.mitre.org/api/cve/CVE-2026-115653 or the vendor advisory, not third-party mirrors. Tell me how to check whether I am affected and how to verify a fix. Cite the sources and say where they are uncertain.Opens a third-party assistant; its answer is its own, not cve.bz's. The prompt holds only this CVE's id and public links.
Attack patterns (CAPEC)
- CAPEC-129 Pointer Manipulation Severity: Medium
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.