CVE-2021-31889
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 2.2%
exploitation probability
2.2%top 18% of all CVEs
observed exploitation
nono source reports it
A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303), PLUSCONTROL 1st Gen (All versions), SIMOTICS CONNECT 400 (All versions < V0.5.0.0). Malformed TCP packets with a corrupted SACK option leads to Information Leaks and Denial-of-Service conditions. (FSMD-2021-0015)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Siemens · Capital Embedded AR Classic 431-422Siemens · Capital Embedded AR Classic R20-11Siemens · PLUSCONTROL 1st GenSiemens · SIMOTICS CONNECT 400References
https://cert-portal.siemens.com/productcert/html/ssa-044112.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-114589.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-223353.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-620288.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-845392.htmlhttps://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdfhttps://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdfhttps://cert-portal.siemens.com/productcert/pdf/ssa-223353.pdfhttps://cert-portal.siemens.com/productcert/pdf/ssa-620288.pdfhttps://cert-portal.siemens.com/productcert/pdf/ssa-845392.pdf