CVE-2021-22156 json
An integer overflow vulnerability in the calloc() function of the C runtime library of affected versions of BlackBerry® QNX Software Develo…
published 2021-08-17 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-9303
- cvss
- 9.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.8%
- EPSS 1.8% chance of exploitation in 30 days, percentile 78%
- public exploits
- 0
- none known
Summary
An integer overflow vulnerability in the calloc() function of the C runtime library of affected versions of BlackBerry® QNX Software Development Platform (SDP) version(s) 6.5.0SP1 and earlier, QNX OS for Medical 1.1 and earlier, and QNX OS for Safety 1.0.1 and earlier that could allow an attacker to potentially perform a denial of service or execute arbitrary code.
Patch / fix
- blackberry qnx_software_development_platform 6.5.0
Exploit prediction
1.79% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.0 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- BlackBerry QNX Software Development Platform (SDP), QNX OS for Medical and QNX OS for Safety
Classification
- Weakness
-
- CWE-190 Integer Overflow or Wraparound
References
-
support.blackberry.com
/kb/articleDetail?articleNumber=000082334
patch, vendor-advisory
-
tools.cisco.com
/security/center/content/CiscoSecurityAdvisory/cisco-sa-qnx-TOxjVPdL
vendor-advisory, third-party-advisory
Sources
- CVE List CVE-2021-22156
- NVD CVE-2021-22156
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