How severe is CVE-2024-20319?

CVE-2024-20319 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2024-20319 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-20319?

CVE-2024-20319 primarily affects Cisco Ios Xr. In total, 93 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-20319?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-20319 have an EU (EUVD) identifier?

Yes. CVE-2024-20319 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-18034.

When was CVE-2024-20319 published?

CVE-2024-20319 was published on 2024-03-13 and last updated on 2026-06-17.

CVE-2024-20319

CVE-2024-20319 is a medium-severity vulnerability in Cisco Ios Xr with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-284.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-18034
Weakness: CWE-284
Affected product: Cisco Ios Xr
Published: 2024-03-13
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2024-20319?: 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.
How severe is CVE-2024-20319?: CVE-2024-20319 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2024-20319 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-20319?: CVE-2024-20319 primarily affects Cisco Ios Xr. In total, 93 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-20319?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-20319 have an EU (EUVD) identifier?: Yes. CVE-2024-20319 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-18034.
When was CVE-2024-20319 published?: CVE-2024-20319 was published on 2024-03-13 and last updated on 2026-06-17.

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmp-uhv6ZDeF

Affected products (93)

cpe:2.3:o:cisco:ios_xr:5.2.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:5.2.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:5.2.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:5.2.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:5.2.4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:5.2.5:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:5.2.47:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:5.3.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:5.3.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:5.3.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:5.3.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:5.3.4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.0.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.0.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.0.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.1.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.1.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.1.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.1.4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.1.12:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.1.22:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.1.32:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.1.36:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.1.42:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.2.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.2.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.2.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.2.11:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.2.25:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.3.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.3.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.3.15:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.4.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.4.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.4.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.25:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.26:*:*:*:*:*:*:*

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