How severe is CVE-2025-20315?

CVE-2025-20315 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-20315 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-20315?

CVE-2025-20315 primarily affects Cisco Ios Xe. In total, 340 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-20315?

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-2025-20315 have an EU (EUVD) identifier?

Yes. CVE-2025-20315 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31036.

When was CVE-2025-20315 published?

CVE-2025-20315 was published on 2025-09-24 and last updated on 2026-09-28.

CVE-2025-20315

CVE-2025-20315 is a high-severity vulnerability in Cisco Ios Xe with a CVSS 3.x base score of 8.6. 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-805.

Key facts

Severity: High (CVSS 3.x base score 8.6)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-31036
Weakness: CWE-805
Affected product: Cisco Ios Xe
Published: 2025-09-24
Last modified: 2026-09-28

Description

A vulnerability in the Network-Based Application Recognition (NBAR) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, causing a denial of service (DoS) condition. This vulnerability is due to improper handling of malformed Control and Provisioning of Wireless Access Points (CAPWAP) packets. An attacker could exploit this vulnerability by sending malformed CAPWAP packets through an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly, resulting in a DoS condition.

Frequently asked questions

What is CVE-2025-20315?: A vulnerability in the Network-Based Application Recognition (NBAR) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, causing a denial of service (DoS) condition. This vulnerability is due to improper handling of malformed Control and Provisioning of Wireless Access Points (CAPWAP) packets. An attacker could exploit this vulnerability by sending malformed CAPWAP packets through an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly, resulting in a DoS condition.
How severe is CVE-2025-20315?: CVE-2025-20315 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-20315 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-20315?: CVE-2025-20315 primarily affects Cisco Ios Xe. In total, 340 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-20315?: 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-2025-20315 have an EU (EUVD) identifier?: Yes. CVE-2025-20315 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31036.
When was CVE-2025-20315 published?: CVE-2025-20315 was published on 2025-09-24 and last updated on 2026-09-28.

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nbar-dos-LAvwTmeT

Affected products (340)

cpe:2.3:o:cisco:ios_xe:3.7.0bs:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.7.0s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.7.1as:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.7.1s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.7.2s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.7.2ts:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.7.3s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.7.4as:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.7.4s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.7.5s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.7.6s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.7.7s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.8.0s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.8.1s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.8.2s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.9.0as:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.9.0s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.9.1as:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.9.1s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.9.2s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.11.0s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.11.1s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.11.2s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.11.3s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.11.4s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.12.0as:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.12.0s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.12.1s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.12.2s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.12.3s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.12.4s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.13.0as:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.13.0s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.13.1s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.13.2as:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.13.2s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.13.3s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.13.4s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.13.5as:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.13.5s:*:*:*:*:*:*:*

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