Integer overflow in Blackberry Qnx OS For Medical
CVE-2021-22156
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.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.018 (77.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- Blackberry Qnx OS For Medical
- Blackberry Qnx OS For Safety
- Blackberry Qnx Software Development Platform — versions 6.5.0
- Blackberry Qnx Software Development Platform (Sdp), OS For Medical And Safety — versions QNX SDP 6.5.0 SP1 and earlier, QNX OS for Medical 1.1 and earlier, QNX OS for Safety 1.0.1 and earlier
Weakness classification (CWE)
References
- support.blackberry.com/kb/articleDetail (Patch, Vendor Advisory)
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-qnx-TOxj… (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-22156?
- CVE-2021-22156 is a critical-severity vulnerability in Blackberry Qnx OS For Medical, classified under Integer Overflow or Wraparound. CVSS score: 9.0/10. Published 2021-08-17.
- How severe is CVE-2021-22156?
- Critical severity. CVSS v3 base score is 9.0 out of 10.