How severe is CVE-2026-40527?

CVE-2026-40527 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-40527 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-40527?

CVE-2026-40527 affects Radare Radare2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-40527?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-40527 have an EU (EUVD) identifier?

Yes. CVE-2026-40527 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23534.

When was CVE-2026-40527 published?

CVE-2026-40527 was published on 2026-04-17 and last updated on 2026-06-17.

CVE-2026-40527

CVE-2026-40527 is a high-severity vulnerability in Radare Radare2 with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v4: 8.5
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-23534
Weakness: CWE-78
Affected product: Radare Radare2
Published: 2026-04-17
Last modified: 2026-06-17

Description

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 interpolation in the pfq command string.

Frequently asked questions

What is CVE-2026-40527?: 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 interpolation in the pfq command string.
How severe is CVE-2026-40527?: CVE-2026-40527 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-40527 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-40527?: CVE-2026-40527 affects Radare Radare2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-40527?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-40527 have an EU (EUVD) identifier?: Yes. CVE-2026-40527 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23534.
When was CVE-2026-40527 published?: CVE-2026-40527 was published on 2026-04-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:radare:radare2:*:*:*:*:*:*:*:*

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