Security readout for executives and security teams
Plain-English summary
This flaw affects radare2 when it processes GDB remote debugging thread information. A malicious or compromised remote debugging endpoint could corrupt radare2 memory, likely crashing the tool and potentially enabling code execution. The source bundle does not show active exploitation.
Executive priority
Treat as high priority for teams using radare2 with remote debugging. Risk is concentrated but meaningful: a security analysis workstation could be crashed or possibly compromised by malicious debugging responses.
Technical view
CVE-2026-8695 is a CWE-416 use-after-free in radare2 6.1.5, in gdbr_threads_list(). It is triggered through malformed GDB remote thread-list handling and has CVSS 4.0 score 8.7. Reported impact is denial of service or possible code execution.
Likely exposure
Exposure is most likely in reverse engineering, malware analysis, embedded debugging, or CI workflows where radare2 connects to GDB remote targets. Ordinary systems are exposed only if radare2 is installed and used with remote debugging.
Exploitation context
The bundle states remote attackers can trigger memory corruption through GDB remote debugging. CISA KEV status is false, and no provided source claims active exploitation. Code execution is described as potential, not confirmed weaponized exploitation.
Researcher notes
The source bundle names radare2 6.1.5 and gdbr_threads_list(). It also lists a commit as both an affected version and a patch reference, so fixed-version evidence is ambiguous. Validate remediation against upstream radare2 guidance.
Mitigation direction
- Identify radare2 6.1.5 deployments and remote-debugging use.
- Check radare2 vendor guidance for a fixed release or supported patch.
- Avoid connecting radare2 to untrusted GDB remote endpoints.
- Restrict remote debugging access to trusted networks and systems.
- Isolate reverse-engineering and debugging workstations where practical.
Validation and detection
- Confirm installed radare2 versions across analyst and build environments.
- Review whether workflows connect radare2 to remote GDB targets.
- Check vendor issue and advisory links for fixed-version clarification.
- Monitor for crashes during GDB remote thread-list processing.
- Document compensating controls if immediate upgrade is unavailable.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-416: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-8695 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.7 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
2 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N——VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6VulnCheckVulnerability scoring details
Base CVSS 4.0 score
8.7HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/radareorg/radare2/issues/25835CVE reference, VulnCheck · issue-tracking
- https://github.com/radareorg/radare2/commit/c213ad6894a1eb9086ac8bf5fae35757e9e1683cCVE reference, VulnCheck · patch
- https://www.vulncheck.com/advisories/radare2-use-after-free-via-gdbr-threads-listCVE reference, VulnCheck · third-party-advisory
- https://github.com/radareorg/radare2/issues/25836CVE reference, VulnCheck · issue-tracking
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.