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CVE-2024-20319

MEDIUM · CVSS 4.3EPSS 0.3%EU EUVD

A vulnerability in the UDP forwarding code of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to bypass configured management plane protection policies and access the Simple Network Management Plane (SNMP) server of an affected device. This vulnerability is due to incorrect UDP forwarding programming when using SNMP with management plane protection. An attacker could exploit this vulnerability by attempting to perform an SNMP operation using broadcast as the destination address that could be processed by an affected device that is configured with an SNMP server. A successful exploit could allow the attacker to communicate to the device on the configured SNMP ports. Although an unauthenticated attacker could send UDP datagrams to the configured SNMP port, only an authenticated user can retrieve or modify data using SNMP requests.

Key facts

CVSS score
4.3 (v3.1)
Severity
MEDIUM
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness (CWE)
CWE-284
EPSS score
0.3% (15th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2024-18034)
Published
March 13, 2024
NVD last modified
June 17, 2026
Status
Analyzed

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2024-18034 in the EU Vulnerability Database. Last updated in EUVD on August 1, 2024.

View on the EU Vulnerability Database

Affected products

  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
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  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr
  • cisco / ios xr

and 43 more…

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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CVE-2024-20319: MEDIUM severity (CVSS 4.3)