UpHeron
All vulnerabilities

Servers and applications

CVE-2021-22945

When sending data to an MQTT server, libcurl <= 7.73.0 and 7.78.0 could in some circumstances erroneously keep a pointer to an already freed memory area and both use that again in a subsequent call to send data and also free it *again*.

Severity
Critical 9.1
Published
23 Sept 2021
Last changed
14 Oct 2026
Added to UpHeron
21 Oct 2026
Sources
NVD

Affected software

SoftwareAffected versions
curlServers and applications · cpe:a:haxx:libcurl
  • From 7.73.0 up to 7.78.0
MySQLServers and applications · cpe:a:oracle:mysql_server
  • From 5.7.0 up to 5.7.35
  • From 8.0.0 up to 8.0.26

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-22945
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-22945