Vulnerability Database

296,137

Total vulnerabilities in the database

CVE-2024-20309

A vulnerability in auxiliary asynchronous port (AUX) functions of Cisco IOS XE Software could allow an authenticated, local attacker to cause an affected device to reload or stop responding.

This vulnerability is due to the incorrect handling of specific ingress traffic when flow control hardware is enabled on the AUX port. An attacker could exploit this vulnerability by reverse telnetting to the AUX port and sending specific data after connecting. A successful exploit could allow the attacker to cause the device to reset or stop responding, resulting in a denial of service (DoS) condition.

  • Published: Mar 27, 2024
  • Updated: Jul 31, 2025
  • CVE: CVE-2024-20309
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 5.5
  • AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

No CWE or OWASP classifications available.

Software From Fixed in
cisco / ios_xe 3.3.0sq 3.3.0sq.x
cisco / ios_xe 3.13.2s 3.13.2s.x
cisco / ios_xe 3.10.6s 3.10.6s.x
cisco / ios_xe 3.6.5be 3.6.5be.x
cisco / ios_xe 3.13.6s 3.13.6s.x
cisco / ios_xe 3.14.4s 3.14.4s.x
cisco / ios_xe 3.7.2ts 3.7.2ts.x
cisco / ios_xe 3.8.0s 3.8.0s.x
cisco / ios_xe 3.3.4se 3.3.4se.x
cisco / ios_xe 3.3.1sq 3.3.1sq.x
cisco / ios_xe 3.13.0s 3.13.0s.x
cisco / ios_xe 3.13.4s 3.13.4s.x
cisco / ios_xe 3.15.1cs 3.15.1cs.x
cisco / ios_xe 3.17.3s 3.17.3s.x
cisco / ios_xe 16.1.2 16.1.2.x
cisco / ios_xe 16.1.3 16.1.3.x
cisco / ios_xe 16.2.1 16.2.1.x
cisco / ios_xe 3.18.2s 3.18.2s.x
cisco / ios_xe 3.7.1s 3.7.1s.x
cisco / ios_xe 3.7.4as 3.7.4as.x
cisco / ios_xe 3.7.0bs 3.7.0bs.x
cisco / ios_xe 3.8.1s 3.8.1s.x
cisco / ios_xe 3.9.0s 3.9.0s.x
cisco / ios_xe 3.9.1as 3.9.1as.x
cisco / ios_xe 3.9.0as 3.9.0as.x
cisco / ios_xe 3.3.3se 3.3.3se.x
cisco / ios_xe 3.3.5se 3.3.5se.x
cisco / ios_xe 3.10.1s 3.10.1s.x
cisco / ios_xe 3.10.2s 3.10.2s.x
cisco / ios_xe 3.10.5s 3.10.5s.x
cisco / ios_xe 3.10.8s 3.10.8s.x
cisco / ios_xe 3.12.2s 3.12.2s.x
cisco / ios_xe 3.6.2ae 3.6.2ae.x
cisco / ios_xe 3.14.1s 3.14.1s.x
cisco / ios_xe 3.4.1sq 3.4.1sq.x
cisco / ios_xe 3.16.0s 3.16.0s.x
cisco / ios_xe 3.16.2s 3.16.2s.x
cisco / ios_xe 3.16.4s 3.16.4s.x
cisco / ios_xe 3.17.1as 3.17.1as.x
cisco / ios_xe 3.18.0as 3.18.0as.x
cisco / ios_xe 3.18.3s 3.18.3s.x
cisco / ios_xe 3.18.2asp 3.18.2asp.x
cisco / ios_xe 3.7.0s 3.7.0s.x
cisco / ios_xe 3.7.6s 3.7.6s.x
cisco / ios_xe 3.7.7s 3.7.7s.x
cisco / ios_xe 3.7.1as 3.7.1as.x
cisco / ios_xe 3.8.2s 3.8.2s.x
cisco / ios_xe 3.9.1s 3.9.1s.x
cisco / ios_xe 3.9.2s 3.9.2s.x
cisco / ios_xe 3.2.2se 3.2.2se.x
cisco / ios_xe 3.2.3se 3.2.3se.x
cisco / ios_xe 3.3.0se 3.3.0se.x
cisco / ios_xe 3.3.1se 3.3.1se.x
cisco / ios_xe 3.3.2se 3.3.2se.x
cisco / ios_xe 3.10.0s 3.10.0s.x
cisco / ios_xe 3.10.3s 3.10.3s.x
cisco / ios_xe 3.10.2ts 3.10.2ts.x
cisco / ios_xe 3.10.7s 3.10.7s.x
cisco / ios_xe 3.10.1xbs 3.10.1xbs.x
cisco / ios_xe 3.11.2s 3.11.2s.x
cisco / ios_xe 3.11.0s 3.11.0s.x
cisco / ios_xe 3.11.3s 3.11.3s.x
cisco / ios_xe 3.12.0as 3.12.0as.x
cisco / ios_xe 3.13.5s 3.13.5s.x
cisco / ios_xe 3.13.5as 3.13.5as.x
cisco / ios_xe 3.13.7as 3.13.7as.x
cisco / ios_xe 3.6.2e 3.6.2e.x
cisco / ios_xe 3.14.0s 3.14.0s.x
cisco / ios_xe 3.14.3s 3.14.3s.x
cisco / ios_xe 3.15.0s 3.15.0s.x
cisco / ios_xe 3.15.1s 3.15.1s.x
cisco / ios_xe 3.15.3s 3.15.3s.x
cisco / ios_xe 3.4.0sq 3.4.0sq.x
cisco / ios_xe 3.5.2sq 3.5.2sq.x
cisco / ios_xe 3.5.4sq 3.5.4sq.x
cisco / ios_xe 3.16.1s 3.16.1s.x
cisco / ios_xe 3.16.0cs 3.16.0cs.x
cisco / ios_xe 3.16.5s 3.16.5s.x
cisco / ios_xe 3.16.4ds 3.16.4ds.x
cisco / ios_xe 3.16.6s 3.16.6s.x
cisco / ios_xe 3.17.0s 3.17.0s.x
cisco / ios_xe 3.17.2s 3.17.2s.x
cisco / ios_xe 3.17.4s 3.17.4s.x
cisco / ios_xe 16.1.1 16.1.1.x
cisco / ios_xe 3.18.0s 3.18.0s.x
cisco / ios_xe 3.18.1sp 3.18.1sp.x
cisco / ios_xe 3.18.1bsp 3.18.1bsp.x
cisco / ios_xe 3.18.1csp 3.18.1csp.x
cisco / ios_xe 3.18.3sp 3.18.3sp.x
cisco / ios_xe 16.6.1 16.6.1.x
cisco / ios_xe 3.7.2s 3.7.2s.x
cisco / ios_xe 3.7.3s 3.7.3s.x
cisco / ios_xe 3.7.4s 3.7.4s.x
cisco / ios_xe 3.7.5s 3.7.5s.x
cisco / ios_xe 3.2.0se 3.2.0se.x
cisco / ios_xe 3.2.1se 3.2.1se.x
cisco / ios_xe 3.10.4s 3.10.4s.x
cisco / ios_xe 3.10.8as 3.10.8as.x
cisco / ios_xe 3.10.9s 3.10.9s.x
cisco / ios_xe 3.10.10s 3.10.10s.x
cisco / ios_xe 3.11.1s 3.11.1s.x
cisco / ios_xe 3.11.4s 3.11.4s.x
cisco / ios_xe 3.12.0s 3.12.0s.x
cisco / ios_xe 3.12.1s 3.12.1s.x
cisco / ios_xe 3.12.3s 3.12.3s.x
cisco / ios_xe 3.12.4s 3.12.4s.x
cisco / ios_xe 3.13.1s 3.13.1s.x
cisco / ios_xe 3.13.3s 3.13.3s.x
cisco / ios_xe 3.13.2as 3.13.2as.x
cisco / ios_xe 3.13.0as 3.13.0as.x
cisco / ios_xe 3.13.7s 3.13.7s.x
cisco / ios_xe 3.13.6as 3.13.6as.x
cisco / ios_xe 3.13.8s 3.13.8s.x
cisco / ios_xe 3.13.9s 3.13.9s.x
cisco / ios_xe 3.13.10s 3.13.10s.x
cisco / ios_xe 3.6.7be 3.6.7be.x
cisco / ios_xe 3.6.10e 3.6.10e.x
cisco / ios_xe 3.14.2s 3.14.2s.x
cisco / ios_xe 3.15.2s 3.15.2s.x
cisco / ios_xe 3.15.4s 3.15.4s.x
cisco / ios_xe 3.5.0sq 3.5.0sq.x
cisco / ios_xe 3.5.1sq 3.5.1sq.x
cisco / ios_xe 3.5.3sq 3.5.3sq.x
cisco / ios_xe 3.5.5sq 3.5.5sq.x
cisco / ios_xe 3.5.6sq 3.5.6sq.x
cisco / ios_xe 3.5.7sq 3.5.7sq.x
cisco / ios_xe 3.16.1as 3.16.1as.x
cisco / ios_xe 3.16.2as 3.16.2as.x
cisco / ios_xe 3.16.3s 3.16.3s.x
cisco / ios_xe 3.16.2bs 3.16.2bs.x
cisco / ios_xe 3.16.3as 3.16.3as.x
cisco / ios_xe 3.16.4as 3.16.4as.x
cisco / ios_xe 3.16.4bs 3.16.4bs.x
cisco / ios_xe 3.16.7s 3.16.7s.x
cisco / ios_xe 3.16.6bs 3.16.6bs.x
cisco / ios_xe 3.16.7as 3.16.7as.x
cisco / ios_xe 3.16.7bs 3.16.7bs.x
cisco / ios_xe 3.16.8s 3.16.8s.x
cisco / ios_xe 3.17.1s 3.17.1s.x
cisco / ios_xe 16.2.2 16.2.2.x
cisco / ios_xe 16.3.1 16.3.1.x
cisco / ios_xe 16.3.2 16.3.2.x
cisco / ios_xe 16.3.3 16.3.3.x
cisco / ios_xe 16.3.1a 16.3.1a.x
cisco / ios_xe 16.3.4 16.3.4.x
cisco / ios_xe 16.3.5 16.3.5.x
cisco / ios_xe 16.3.5b 16.3.5b.x
cisco / ios_xe 16.3.6 16.3.6.x
cisco / ios_xe 16.3.7 16.3.7.x
cisco / ios_xe 16.3.8 16.3.8.x
cisco / ios_xe 16.4.1 16.4.1.x
cisco / ios_xe 16.4.2 16.4.2.x
cisco / ios_xe 16.4.3 16.4.3.x
cisco / ios_xe 16.5.1 16.5.1.x
cisco / ios_xe 16.5.1a 16.5.1a.x
cisco / ios_xe 16.5.1b 16.5.1b.x
cisco / ios_xe 16.5.2 16.5.2.x
cisco / ios_xe 16.5.3 16.5.3.x
cisco / ios_xe 3.18.1s 3.18.1s.x
cisco / ios_xe 3.18.4s 3.18.4s.x
cisco / ios_xe 3.18.0sp 3.18.0sp.x
cisco / ios_xe 3.18.1asp 3.18.1asp.x
cisco / ios_xe 3.18.2sp 3.18.2sp.x
cisco / ios_xe 3.18.4sp 3.18.4sp.x
cisco / ios_xe 3.18.3asp 3.18.3asp.x
cisco / ios_xe 3.18.3bsp 3.18.3bsp.x
cisco / ios_xe 3.18.5sp 3.18.5sp.x
cisco / ios_xe 16.6.2 16.6.2.x
cisco / ios_xe 16.6.3 16.6.3.x
cisco / ios_xe 16.6.4 16.6.4.x
cisco / ios_xe 16.7.1 16.7.1.x
cisco / ios_xe 16.7.1a 16.7.1a.x
cisco / ios_xe 16.7.1b 16.7.1b.x
cisco / ios_xe 16.7.2 16.7.2.x
cisco / ios_xe 16.7.3 16.7.3.x
cisco / ios_xe 16.8.1 16.8.1.x
cisco / ios_xe 16.8.1a 16.8.1a.x
cisco / ios_xe 16.8.1b 16.8.1b.x
cisco / ios_xe 16.8.1s 16.8.1s.x
cisco / ios_xe 16.8.1c 16.8.1c.x
cisco / ios_xe 16.8.1d 16.8.1d.x
cisco / ios_xe 16.8.2 16.8.2.x
cisco / ios_xe 16.8.1e 16.8.1e.x
cisco / ios_xe 16.9.1 16.9.1.x
cisco / ios_xe 16.9.1b 16.9.1b.x
cisco / ios_xe 16.9.1s 16.9.1s.x
cisco / ios_xe 3.6.9e 3.6.9e.x
cisco / ios_xe 3.5.8sq 3.5.8sq.x
cisco / ios_xe 3.16.9s 3.16.9s.x
cisco / ios_xe 3.16.10s 3.16.10s.x
cisco / ios_xe 16.3.9 16.3.9.x
cisco / ios_xe 16.3.10 16.3.10.x
cisco / ios_xe 16.3.11 16.3.11.x
cisco / ios_xe 3.18.6sp 3.18.6sp.x
cisco / ios_xe 3.18.7sp 3.18.7sp.x
cisco / ios_xe 3.18.8asp 3.18.8asp.x
cisco / ios_xe 3.18.9sp 3.18.9sp.x
cisco / ios_xe 16.6.5 16.6.5.x
cisco / ios_xe 16.6.4a 16.6.4a.x
cisco / ios_xe 16.6.5a 16.6.5a.x
cisco / ios_xe 16.6.6 16.6.6.x
cisco / ios_xe 16.6.7 16.6.7.x
cisco / ios_xe 16.6.8 16.6.8.x
cisco / ios_xe 16.6.9 16.6.9.x
cisco / ios_xe 16.6.10 16.6.10.x
cisco / ios_xe 16.7.4 16.7.4.x
cisco / ios_xe 16.8.3 16.8.3.x
cisco / ios_xe 16.9.2 16.9.2.x
cisco / ios_xe 16.9.1a 16.9.1a.x
cisco / ios_xe 16.9.3 16.9.3.x
cisco / ios_xe 16.9.4 16.9.4.x
cisco / ios_xe 16.9.3a 16.9.3a.x
cisco / ios_xe 16.9.5 16.9.5.x
cisco / ios_xe 16.9.5f 16.9.5f.x
cisco / ios_xe 16.9.6 16.9.6.x
cisco / ios_xe 16.9.7 16.9.7.x
cisco / ios_xe 16.9.8 16.9.8.x
cisco / ios_xe 16.10.1 16.10.1.x
cisco / ios_xe 16.10.1a 16.10.1a.x
cisco / ios_xe 16.10.1b 16.10.1b.x
cisco / ios_xe 16.10.1s 16.10.1s.x
cisco / ios_xe 16.10.1c 16.10.1c.x
cisco / ios_xe 16.10.1e 16.10.1e.x
cisco / ios_xe 16.10.1d 16.10.1d.x
cisco / ios_xe 16.10.2 16.10.2.x
cisco / ios_xe 16.10.1f 16.10.1f.x
cisco / ios_xe 16.10.1g 16.10.1g.x
cisco / ios_xe 16.10.3 16.10.3.x
cisco / ios_xe 16.11.1 16.11.1.x
cisco / ios_xe 16.11.1a 16.11.1a.x
cisco / ios_xe 16.11.1b 16.11.1b.x
cisco / ios_xe 16.11.2 16.11.2.x
cisco / ios_xe 16.11.1s 16.11.1s.x
cisco / ios_xe 16.12.1 16.12.1.x
cisco / ios_xe 16.12.1s 16.12.1s.x
cisco / ios_xe 16.12.1a 16.12.1a.x
cisco / ios_xe 16.12.1c 16.12.1c.x
cisco / ios_xe 16.12.1w 16.12.1w.x
cisco / ios_xe 16.12.2 16.12.2.x
cisco / ios_xe 16.12.1y 16.12.1y.x
cisco / ios_xe 16.12.2a 16.12.2a.x
cisco / ios_xe 16.12.3 16.12.3.x
cisco / ios_xe 16.12.8 16.12.8.x
cisco / ios_xe 16.12.2s 16.12.2s.x
cisco / ios_xe 16.12.1x 16.12.1x.x
cisco / ios_xe 16.12.1t 16.12.1t.x
cisco / ios_xe 16.12.4 16.12.4.x
cisco / ios_xe 16.12.3s 16.12.3s.x
cisco / ios_xe 16.12.3a 16.12.3a.x
cisco / ios_xe 16.12.4a 16.12.4a.x
cisco / ios_xe 16.12.5 16.12.5.x
cisco / ios_xe 16.12.6 16.12.6.x
cisco / ios_xe 16.12.1z1 16.12.1z1.x
cisco / ios_xe 16.12.5a 16.12.5a.x
cisco / ios_xe 16.12.5b 16.12.5b.x
cisco / ios_xe 16.12.1z2 16.12.1z2.x
cisco / ios_xe 16.12.6a 16.12.6a.x
cisco / ios_xe 16.12.7 16.12.7.x
cisco / ios_xe 16.12.9 16.12.9.x
cisco / ios_xe 16.12.10 16.12.10.x
cisco / ios_xe 16.12.10a 16.12.10a.x
cisco / ios_xe 17.1.1 17.1.1.x
cisco / ios_xe 17.1.1a 17.1.1a.x
cisco / ios_xe 17.1.1s 17.1.1s.x
cisco / ios_xe 17.1.1t 17.1.1t.x
cisco / ios_xe 17.1.3 17.1.3.x
cisco / ios_xe 17.2.1 17.2.1.x
cisco / ios_xe 17.2.1r 17.2.1r.x
cisco / ios_xe 17.2.1a 17.2.1a.x
cisco / ios_xe 17.2.1v 17.2.1v.x
cisco / ios_xe 17.2.2 17.2.2.x
cisco / ios_xe 17.2.3 17.2.3.x
cisco / ios_xe 17.3.1 17.3.1.x
cisco / ios_xe 17.3.2 17.3.2.x
cisco / ios_xe 17.3.3 17.3.3.x
cisco / ios_xe 17.3.1a 17.3.1a.x
cisco / ios_xe 17.3.1w 17.3.1w.x
cisco / ios_xe 17.3.2a 17.3.2a.x
cisco / ios_xe 17.3.1x 17.3.1x.x
cisco / ios_xe 17.3.1z 17.3.1z.x
cisco / ios_xe 17.3.4 17.3.4.x
cisco / ios_xe 17.3.5 17.3.5.x
cisco / ios_xe 17.3.4a 17.3.4a.x
cisco / ios_xe 17.3.6 17.3.6.x
cisco / ios_xe 17.3.4b 17.3.4b.x
cisco / ios_xe 17.3.4c 17.3.4c.x
cisco / ios_xe 17.3.5a 17.3.5a.x
cisco / ios_xe 17.3.5b 17.3.5b.x
cisco / ios_xe 17.3.7 17.3.7.x
cisco / ios_xe 17.3.8 17.3.8.x
cisco / ios_xe 17.3.8a 17.3.8a.x
cisco / ios_xe 17.4.1 17.4.1.x
cisco / ios_xe 17.4.2 17.4.2.x
cisco / ios_xe 17.4.1a 17.4.1a.x
cisco / ios_xe 17.4.1b 17.4.1b.x
cisco / ios_xe 17.4.2a 17.4.2a.x
cisco / ios_xe 17.5.1 17.5.1.x
cisco / ios_xe 17.5.1a 17.5.1a.x
cisco / ios_xe 17.6.1 17.6.1.x
cisco / ios_xe 17.6.2 17.6.2.x
cisco / ios_xe 17.6.1w 17.6.1w.x
cisco / ios_xe 17.6.1a 17.6.1a.x
cisco / ios_xe 17.6.1x 17.6.1x.x
cisco / ios_xe 17.6.3 17.6.3.x
cisco / ios_xe 17.6.1y 17.6.1y.x
cisco / ios_xe 17.6.1z 17.6.1z.x
cisco / ios_xe 17.6.3a 17.6.3a.x
cisco / ios_xe 17.6.4 17.6.4.x
cisco / ios_xe 17.6.1z1 17.6.1z1.x
cisco / ios_xe 17.6.5 17.6.5.x
cisco / ios_xe 17.6.6 17.6.6.x
cisco / ios_xe 17.6.6a 17.6.6a.x
cisco / ios_xe 17.6.5a 17.6.5a.x
cisco / ios_xe 17.7.1 17.7.1.x
cisco / ios_xe 17.7.1a 17.7.1a.x
cisco / ios_xe 17.7.1b 17.7.1b.x
cisco / ios_xe 17.7.2 17.7.2.x
cisco / ios_xe 17.10.1 17.10.1.x
cisco / ios_xe 17.10.1a 17.10.1a.x
cisco / ios_xe 17.10.1b 17.10.1b.x
cisco / ios_xe 17.8.1 17.8.1.x
cisco / ios_xe 17.8.1a 17.8.1a.x
cisco / ios_xe 17.9.1 17.9.1.x
cisco / ios_xe 17.9.1w 17.9.1w.x
cisco / ios_xe 17.9.2 17.9.2.x
cisco / ios_xe 17.9.1a 17.9.1a.x
cisco / ios_xe 17.9.1x 17.9.1x.x
cisco / ios_xe 17.9.1y 17.9.1y.x
cisco / ios_xe 17.9.3 17.9.3.x
cisco / ios_xe 17.9.2a 17.9.2a.x
cisco / ios_xe 17.9.1x1 17.9.1x1.x
cisco / ios_xe 17.9.3a 17.9.3a.x
cisco / ios_xe 17.9.4 17.9.4.x
cisco / ios_xe 17.9.1y1 17.9.1y1.x
cisco / ios_xe 17.9.4a 17.9.4a.x
cisco / ios_xe 17.11.1 17.11.1.x
cisco / ios_xe 17.11.1a 17.11.1a.x
cisco / ios_xe 17.11.99sw 17.11.99sw.x
cisco / ios_xe 17.12.1 17.12.1.x
cisco / ios_xe 17.12.1w 17.12.1w.x
cisco / ios_xe 17.12.1a 17.12.1a.x
cisco / ios_xe 17.12.2 17.12.2.x
cisco / ios_xe 17.12.2a 17.12.2a.x