CVE-2026-14761Public exploit

Process crash via signed length overflow

Published Jul 5, 2026 · Updated Jul 5, 2026

Integer overflow in radare2 6.1.0 through 6.1.6 allows local users to crash the process through oversized string concatenation. The r_str_append and r_str_prepend functions in libr/util/str.c stored strlen results in signed int variables, so the combined allocation length overflowed before realloc. Triggering the demonstrated boundary condition requires local execution of a harness or another caller able to supply strings totaling beyond INT_MAX, and the bounded consequence is process interruption.

CVSS severity5.5
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in radare2 6.1.0 through 6.1.6 allows local users to crash the process through oversized string concatenation. The r_str_append and r_str_prepend functions in libr/util/str.c stored strlen results in signed int variables, so the combined allocation length overflowed before realloc. Triggering the demonstrated boundary condition requires local execution of a harness or another caller able to supply strings totaling beyond INT_MAX, and the bounded consequence is process interruption.

The record

CVE
CVE-2026-14761
Published
Jul 5, 2026
Updated
Jul 5, 2026
Vendor
radareorg
Product
radare2
Classifications
CWE-190, CWE-189, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.1.0
  2. Affected versionversion=6.1.1
  3. Affected versionversion=6.1.2
  4. Affected versionversion=6.1.3
  5. Affected versionversion=6.1.4
  6. Affected versionversion=6.1.5
  7. Affected versionversion=6.1.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

radareorg · radare2version=6.1.0; version=6.1.1; version=6.1.2; version=6.1.3; version=6.1.4; version=6.1.5; version=6.1.6

Published CVSS scores

3.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
1.9VulDBCVSS: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
1.7VulDBAV:L/AC:L/Au:S/C:N/I:N/A:P
5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
CWE-189Numeric Errors
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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