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CVE-2026-40527

radare2 Command Injection via DWARF Parameter Names

8.5 High

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.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
Passive

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.92%Up 0.9 points since Apr 18, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.5

radare2 Command Injection via DWARF Parameter Names

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.

Record
CVE-2026-40527
CVSS 4.0
8.5 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-78
Updated
2026-11-02
EUVDEUVD-2026-23534 8.5

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.

Record
EUVD-2026-23534
CVSS 4.0
8.5 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-4pc8-6qgf-fgv2 8.5

radare2 prior to commit bc5a890 contains a command injection vulnerability in the afsv/afsvj...

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.

Record
GHSA-4pc8-6qgf-fgv2
CVSS 4.0
8.5 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-78
Updated
2026-11-02
NVD 8.5

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.

Record
CVE-2026-40527
CVSS 4.0
8.5 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-78
Updated
2026-11-02
OSV 8.5

radare2 Command Injection via DWARF Parameter Names

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.

Record
CVE-2026-40527
CVSS 4.0
8.5 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weakness
CWE-78
Updated
2026-11-02
OSVUBUNTU-CVE-2026-40527 8.5

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.

Record
UBUNTU-CVE-2026-40527
CVSS 4.0
8.5 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2026:21988-1 No score

Security update for radare2

This update for radare2 fixes the following issues:

Changes in radare2:

  • Update to version 6.2.2:

    • Analysis: new JNI plugin with typed interface tables, arm64 Swift float calling conventions, DWARF prototype linking, jump-table and switch-case fixes
    • Core: fix RAnalOp leaks in disasm/diff/debug loops, aoj memory use, partial-read handling, fp variable recovery
    • Bundle sdb 2.5.2 (upstream pin): rename shlib to libsdb2_5_2
    • Details can be found here: https://github.com/radareorg/radare2/releases/tag/6.2.2

  • Security issues fixed:

    • CVE-2026-81886: Validate dmp64 page counts against dump size (boo#1282346).
    • CVE-2026-81885: Fix infinite loop in the NE fixup parser (boo#1282345).
    • CVE-2026-81884: Validate Mach-O LC_DATA_IN_CODE ranges (boo#1282344).
    • CVE-2026-81883: Fix Lua function parser OOB reads (boo#1282343).
    • CVE-2026-81882: Fix bplist Unicode string conversion (boo#1282342).
    • CVE-2026-81881: Fix Swift Mach-O field metadata bounds check (boo#1282341).
    • CVE-2026-81880: Decode PEF relocs lazily, add more bounds and overflow checks (boo#1282340).
    • CVE-2026-81879: Fix oobread in ELF PN_XNUM phdr count handling (boo#1282339).
    • CVE-2026-81878: Fix heap write overflow in Python loader (boo#1282338).
    • CVE-2026-14788: Denial of Service via use-after-free in r_core_bin_load function (boo#1270453).
    • CVE-2026-14761: Denial of service via integer overflow in string manipulation functions (boo#1270452).
    • CVE-2026-14760: Denial of Service via local use-after-free vulnerability (boo#1270450).
    • CVE-2026-14759: Denial of Service via heap-based buffer overflow (boo#1270449).
    • CVE-2026-14758: Denial of Service via integer overflow in hexpairs parser (boo#1270447).
    • CVE-2026-14757: Integer overflow allows local impact (boo#1270445).
    • CVE-2026-40527: Command injection vulnerability in the afsv/afsvj (boo#1262336).
    • CVE-2026-4174: Missing validation against an upper limit when allocating memory in the Mach-O file parser can lead to excessive resource consumption (boo#1259722).

  • Security issue fixed with the previous release:

    • CVE-2026-41015: Configured on UNIX without SSL, allows command injection via a PDB name to rabin2 (boo#1262190).
    • CVE-2026-40517: Crafted PDB file with newline characters in symbol names can allow to inject arbitrary commands (boo#1262680).
    • CVE-2026-8695: UAFs in the gdb remote protocol ##crash (boo#1265403).
Record
openSUSE-SU-2026:21988-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
radare2
Ubuntu:16.04:LTS
 All versions, plus listed versions
0.9.6-3.1ubuntu1
 None known
radare2
Ubuntu:Pro:18.04:LTS
 All versions, plus listed versions
1.6.0+dfsg-12.0.0+dfsg-12.1.0+dfsg-12.3.0+dfsg-12.3.0+dfsg-22.3.0+dfsg-2ubuntu0.1~esm1
 None known
radare2
Ubuntu:Pro:20.04:LTS
 All versions, plus listed versions
3.2.1+dfsg-5build14.0.0+dfsg-14.2.1+dfsg-14.2.1+dfsg-24.2.1+dfsg-2ubuntu0.1~esm1
 None known
radare2
Ubuntu:Pro:24.04:LTS
 All versions, plus listed versions
5.5.0+dfsg-1ubuntu15.5.0+dfsg-1.1ubuntu25.5.0+dfsg-1.1ubuntu35.5.0+dfsg-1.1ubuntu3+esm1
 None known
radare2
Ubuntu:25.10
 All versions, plus listed versions
5.9.8+dfsg-25.9.8+dfsg-2ubuntu0.25.10.15.9.8+dfsg-2ubuntu0.25.10.2
 None known
radare2
Ubuntu:26.10
 All versions, plus listed versions
6.0.7+ds-16.1.6+ds-26.1.6+ds-36.1.8+ds-1
 None known
radare2
Ubuntu:26.04:LTS
 All versions, plus listed versions
5.9.8+dfsg-26.0.4+dfsg-16.0.7+ds-1
 None known
radare2
openSUSE:Leap 16.0
From an advisory covering 20 CVEs
 before 6.2.2-bp160.1.1
6.2.2-bp160.1.1

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-40527 is a high vulnerability (CVSS 8.5) in Radare Radare2, published April 17, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.92%, the 60th percentile. No source names a fixed version.

References

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