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CVE-2026-4174

Radare2 Mach-O File mach0.c walk_exports_trie resource consumption

4.8 MediumFix availableDisputed

A vulnerability has been found in Radare2 5.9.9. This issue affects the function walk_exports_trie of the file libr/bin/format/mach0/mach0.c of the component Mach-O File Parser. Such manipulation leads to resource consumption. The attack can only be performed from a local environment. The exploit has been disclosed to the public and may be used. The existence of this vulnerability is still disputed at present. Upgrading to version 6.1.2 is capable of addressing this issue. The name of the patch is 4371ae84c99c46b48cb21badbbef06b30757aba0. You should upgrade the affected component. The code maintainer states that, "[he] wont consider this bug a DoS".

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
Low

Exploit likelihood

0.12%Up 0.1 points since Mar 15, 2026
90%50%10%1%

What each source reports

CVE List Score used 4.8

Radare2 Mach-O File mach0.c walk_exports_trie resource consumption

A vulnerability has been found in Radare2 5.9.9. This issue affects the function walk_exports_trie of the file libr/bin/format/mach0/mach0.c of the component Mach-O File Parser. Such manipulation leads to resource consumption. The attack can only be performed from a local environment. The exploit has been disclosed to the public and may be used. The existence of this vulnerability is still disputed at present. Upgrading to version 6.1.2 is capable of addressing this issue. The name of the patch is 4371ae84c99c46b48cb21badbbef06b30757aba0. You should upgrade the affected component. The code maintainer states that, "[he] wont consider this bug a DoS".

Record
CVE-2026-4174
CVSS 4.0
4.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
CVSS 3.1
3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CVSS 3.0
3.3 LowCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CVSS 2.0
1.7 AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C
Weakness
CWE-400, CWE-404
Updated
2026-11-02
EUVDEUVD-2026-12222 4.8

A vulnerability has been found in Radare2 5.9.9. This issue affects the function walk_exports_trie of the file libr/bin/format/mach0/mach0.c of the component Mach-O File Parser. Such manipulation leads to resource consumption. The attack can only be performed from a local environment. The exploit has been disclosed to the public and may be used. The existence of this vulnerability is still disputed at present. Upgrading to version 6.1.2 is capable of addressing this issue. The name of the patch is 4371ae84c99c46b48cb21badbbef06b30757aba0. You should upgrade the affected component. The code maintainer states that, "[he] wont consider this bug a DoS".

Record
EUVD-2026-12222
CVSS 4.0
4.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Updated
2026-11-02
GitHub AdvisoriesGHSA-fwp9-q76v-g574 1.9

A vulnerability has been found in Radare2 5.9.9. This issue affects the function...

A vulnerability has been found in Radare2 5.9.9. This issue affects the function walk_exports_trie of the file libr/bin/format/mach0/mach0.c of the component Mach-O File Parser. Such manipulation leads to resource consumption. The attack can only be performed from a local environment. The exploit has been disclosed to the public and may be used. The existence of this vulnerability is still disputed at present. Upgrading to version 6.1.2 is capable of addressing this issue. The name of the patch is 4371ae84c99c46b48cb21badbbef06b30757aba0. You should upgrade the affected component. The code maintainer states that, "[he] wont consider this bug a DoS".

Record
GHSA-fwp9-q76v-g574
CVSS 4.0
1.9 LowCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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
3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Weakness
CWE-400
Updated
2026-11-02
NVD 1.9

A vulnerability has been found in Radare2 5.9.9. This issue affects the function walk_exports_trie of the file libr/bin/format/mach0/mach0.c of the component Mach-O File Parser. Such manipulation leads to resource consumption. The attack can only be performed from a local environment. The exploit has been disclosed to the public and may be used. The existence of this vulnerability is still disputed at present. Upgrading to version 6.1.2 is capable of addressing this issue. The name of the patch is 4371ae84c99c46b48cb21badbbef06b30757aba0. You should upgrade the affected component. The code maintainer states that, "[he] wont consider this bug a DoS".

Record
CVE-2026-4174
CVSS 4.0
1.9 LowCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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
3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CVSS 2.0
1.7 LowAV:L/AC:L/Au:S/C:N/I:N/A:P
Weakness
CWE-400, CWE-404
Updated
2026-11-02
OSV 1.9

Radare2 Mach-O File mach0.c walk_exports_trie resource consumption

A vulnerability has been found in Radare2 5.9.9. This issue affects the function walk_exports_trie of the file libr/bin/format/mach0/mach0.c of the component Mach-O File Parser. Such manipulation leads to resource consumption. The attack can only be performed from a local environment. The exploit has been disclosed to the public and may be used. The existence of this vulnerability is still disputed at present. Upgrading to version 6.1.2 is capable of addressing this issue. The name of the patch is 4371ae84c99c46b48cb21badbbef06b30757aba0. You should upgrade the affected component. The code maintainer states that, "[he] wont consider this bug a DoS".

Record
CVE-2026-4174
CVSS 4.0
1.9 LowCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Weakness
CWE-400, CWE-404
Updated
2026-11-02
OSVUBUNTU-CVE-2026-4174 1.9

A vulnerability has been found in Radare2 5.9.9. This issue affects the function walk_exports_trie of the file libr/bin/format/mach0/mach0.c of the component Mach-O File Parser. Such manipulation leads to resource consumption. The attack can only be performed from a local environment. The exploit has been disclosed to the public and may be used. The existence of this vulnerability is still disputed at present. Upgrading to version 6.1.2 is capable of addressing this issue. The name of the patch is 4371ae84c99c46b48cb21badbbef06b30757aba0. You should upgrade the affected component. The code maintainer states that, "[he] wont consider this bug a DoS".

Record
UBUNTU-CVE-2026-4174
CVSS 4.0
1.9 LowCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
CVSS 3.1
3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
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
 before 6.2.2-bp160.1.1
6.2.2-bp160.1.1

History

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

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

In short

CVE-2026-4174 is a medium vulnerability (CVSS 4.8) in Radare2, published March 15, 2026. Its validity is disputed. EPSS puts the chance of exploitation in the next 30 days at 0.12%, the 1st percentile. Fixed in radare2 6.2.2-bp160.1.1.

References

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