CVE-2026-40527
Command injection in radare2 via DWARF param names enabling shell execution.
Is CVE-2026-40527 being exploited?
Not confirmed. CVE-2026-40527 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.92% probability of exploitation in the next 30 days.
How severe is CVE-2026-40527?
CVE-2026-40527 is rated High with a CVSS score of 8.5. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-40527?
Yes. A fix has been recorded for CVE-2026-40527. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-40527 affect?
CVE-2026-40527 affects radare2. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-40527?
Update radare2 to patched version; avoid untrusted binaries.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Local shell command execution via crafted ELF DWARF parameter names during radare2 analysis.
Patch when possible
- affected< bc5a89033db3ecb5b1f7bf681fc6ba4dcfc14683
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.