PatchTheCVECVE-2026-40527: radare2 prior to commit bc5a890 contains a command injection vulnerability in the afsv/afsvj command path wher
CVE-2026-40527 is a high-severity flaw (CVSS 7.8) affecting radare2. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
radare2 prior to commit bc5a890 contains a command injection vulnerability in the afsv/afsvj command path where crafted ELF binaries can embed malicious r2 command sequences as DWARF DW_TAG_formal_parameter names. Attackers can craft a binary with shell commands in DWARF parameter names that execute when radare2 analyzes the binary with aaa and subsequently runs afsvj, allowing arbitrary shell command execution through the unsanitized parameter i
Why this priority
- High severity
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.8 (High) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.9% (top 40%) |
| CISA exploited list | No |
| Weakness | CWE-78 |
| Published | 2026-04-17 |
| Last modified | 2026-10-26 |
Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-40527?
radare2: upgrade to 6.1.6. Exact commands for each OS are on this page.
Is CVE-2026-40527 being exploited?
CVE-2026-40527 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-40527 affect?
CVE-2026-40527 affects radare2. Severity is high (CVSS 7.8). radare2 prior to commit bc5a890 contains a command injection vulnerability in the afsv/afsvj command path where crafted ELF binaries can embed malicious r2 command sequences as DWARF DW_TAG_formal_parameter names. Attackers can craft a bina
How urgent is CVE-2026-40527?
Priority 47/100. High severity; Public exploit reference
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