radare2: Remote code execution when loading Pebble/SMD binary
Affects radare2 6.0.5 and 6.2.0 in the default configuration when opening crafted binaries from several format plugins. Fixed in 6.2.2.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
- Exploited
- No known exploitation
- Fix
- Fixed in 6.2.2
- Who is exposed
- Specific setups only
Do first: Check whether your setup matches what the bug needs. Attacker-controlled data from several binary format plugins reaches RBinInfo->bclass Confirmed in radare2 6.0.5 and 6.2.0 Reproduces in default configuration with no flags or user commands
- Exploitation?/40Exploitation: unknown (data gap). No CISA SSVC exploitation rating yet
- Exposure5/25Specific setups only
- Reach?/20Reach: unknown (data gap). No tracked technology or package matched
- Severity8.5/10CVSS 8.5
- No patch0/5No signal
What would change the score
- Would score about 64 if added to CISA KEV
- Would score about 59 if CISA's SSVC rates exploitation active
- Would score about 24 if CISA's SSVC rates it automatable
CVE-2026-108387 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 8.5 (high) and affects radare2; fixed in 6.2.2.
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- Published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 14/100 · provisional
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Specific setups only
- Fix
- Fixed in 6.2.2
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
radare2, a reverse engineering toolset, can run attacker-supplied commands with the privileges of the radare2 process when it opens or analyzes a crafted Pebble or Sega Mega Drive binary. An attacker with local access and no login can trigger this if a user is induced to open or analyze the malicious file.
Read the original description
radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.2, attacker-controlled data from several binary format plugins could reach RBinInfo->bclass. Opening or analyzing a crafted Pebble or Sega Mega Drive binary could place a dbg:// URI in bclass, causing radare2 to reopen the input through the debug input/output plugin and ultimately pass attacker-controlled arguments to execvp(). This could execute commands with the privileges of the radare2 process without an explicit debugging command. This issue is fixed in version 6.2.2.
What to do
Check whether your setup matches what the bug needs.
Attacker-controlled data from several binary format plugins reaches RBinInfo->bclass Confirmed in radare2 6.0.5 and 6.2.0 Reproduces in default configuration with no flags or user commandsUpgrade to a fixed version: 6.2.2.
Workaround: Avoid opening or automatically analyzing untrusted files with affected versions of radare2.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- radareorg radare2
fixed in 6.2.2
Evidence 5
- Advisory
- Repository
- Repository
- Repository
- Repository
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.
Questions about CVE-2026-108387
Is CVE-2026-108387 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
What does this mean?
Opening a specially crafted binary file can lead to arbitrary command execution with the privileges of the radare2 process. Attacker-controlled data from several binary format plugins can reach RBinInfo->bclass.Source: github.com, github.com
Which versions are affected by CVE-2026-108387?
radare2: before 6.2.2.Source: cve.now feed data
Am I affected, and how do I check?
The vulnerability has been confirmed in radare2 6.0.5 and 6.2.0, and it reproduces in the default configuration with no flags or user commands. To check the installed version, run radare2 -v.Source: github.com, github.com
How do I fix CVE-2026-108387?
Upgrade to radare2 6.2.2, the fixed version. Until then, avoid opening or automatically analyzing untrusted files with affected versions.Source: github.com, github.com