How severe is CVE-2024-20313?

CVE-2024-20313 has a CVSS 3.x base score of 7.4, rated high 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 none, and availability high.

Is CVE-2024-20313 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-20313?

CVE-2024-20313 primarily affects Cisco Ios Xe. In total, 38 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-20313?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-20313 have an EU (EUVD) identifier?

Yes. CVE-2024-20313 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-18028.

When was CVE-2024-20313 published?

CVE-2024-20313 was published on 2024-04-24 and last updated on 2026-06-17.

CVE-2024-20313

CVE-2024-20313 is a high-severity vulnerability in Cisco Ios Xe with a CVSS 3.x base score of 7.4. 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-120.

Key facts

Severity: High (CVSS 3.x base score 7.4)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-18028
Weakness: CWE-120
Affected product: Cisco Ios Xe
Published: 2024-04-24
Last modified: 2026-06-17

Description

A vulnerability in the OSPF version 2 (OSPFv2) feature of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to improper validation of OSPF updates that are processed by a device. An attacker could exploit this vulnerability by sending a malformed OSPF update to the device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

Frequently asked questions

What is CVE-2024-20313?: A vulnerability in the OSPF version 2 (OSPFv2) feature of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to improper validation of OSPF updates that are processed by a device. An attacker could exploit this vulnerability by sending a malformed OSPF update to the device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.
How severe is CVE-2024-20313?: CVE-2024-20313 has a CVSS 3.x base score of 7.4, rated high 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 none, and availability high.
Is CVE-2024-20313 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-20313?: CVE-2024-20313 primarily affects Cisco Ios Xe. In total, 38 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-20313?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-20313 have an EU (EUVD) identifier?: Yes. CVE-2024-20313 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-18028.
When was CVE-2024-20313 published?: CVE-2024-20313 was published on 2024-04-24 and last updated on 2026-06-17.

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-ospf-dos-dR9Sfrxp

Affected products (38)

cpe:2.3:o:cisco:ios_xe:17.5.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.5.1a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.6.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.6.1a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.6.1w:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.6.1x:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.6.1y:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.6.1z:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.6.1z1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.6.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.6.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.6.3a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.6.4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.6.5:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.6.5a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.7.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.7.1a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.7.1b:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.7.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.8.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.8.1a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.9.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.9.1a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.9.1w:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.9.1x:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.9.1x1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.9.1y:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.9.1y1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.9.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.9.2a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.9.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.9.3a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.10.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.10.1a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.10.1b:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.11.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.11.1a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.11.99sw:*:*:*:*:*:*:*

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