How severe is CVE-2025-20192?

CVE-2025-20192 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-20192 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-20192?

CVE-2025-20192 primarily affects Cisco Ios Xe. In total, 189 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-20192?

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-2025-20192 have an EU (EUVD) identifier?

Yes. CVE-2025-20192 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-13901.

When was CVE-2025-20192 published?

CVE-2025-20192 was published on 2025-05-07 and last updated on 2026-09-28.

CVE-2025-20192

CVE-2025-20192 is a high-severity vulnerability in Cisco Ios Xe with a CVSS 3.x base score of 7.7. 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-232.

Key facts

Severity: High (CVSS 3.x base score 7.7)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-13901
Weakness: CWE-232
Affected product: Cisco Ios Xe
Published: 2025-05-07
Last modified: 2026-09-28

Description

A vulnerability in the Internet Key Exchange version 1 (IKEv1) implementation of Cisco IOS XE Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition. The attacker must have valid IKEv1 VPN credentials to exploit this vulnerability. This vulnerability is due to improper validation of IKEv1 phase 2 parameters before the IPsec security association creation request is handed off to the hardware cryptographic accelerator of an affected device. An attacker could exploit this vulnerability by sending crafted IKEv1 messages to the affected device. A successful exploit could allow the attacker to cause the device to reload.

Frequently asked questions

What is CVE-2025-20192?: A vulnerability in the Internet Key Exchange version 1 (IKEv1) implementation of Cisco IOS XE Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition. The attacker must have valid IKEv1 VPN credentials to exploit this vulnerability. This vulnerability is due to improper validation of IKEv1 phase 2 parameters before the IPsec security association creation request is handed off to the hardware cryptographic accelerator of an affected device. An attacker could exploit this vulnerability by sending crafted IKEv1 messages to the affected device. A successful exploit could allow the attacker to cause the device to reload.
How severe is CVE-2025-20192?: CVE-2025-20192 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-20192 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-20192?: CVE-2025-20192 primarily affects Cisco Ios Xe. In total, 189 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-20192?: 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-2025-20192 have an EU (EUVD) identifier?: Yes. CVE-2025-20192 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-13901.
When was CVE-2025-20192 published?: CVE-2025-20192 was published on 2025-05-07 and last updated on 2026-09-28.

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-ikev1-dos-XHk3HzFC

Affected products (189)

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:3.13.2s:*:*:*:*:*:*:*
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:3.13.5s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.13.6as:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.13.6s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.13.7s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.13.8s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.13.9s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.13.10s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.14.0s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.14.1s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.14.2s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.14.3s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.14.4s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.15.0s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.15.1cs:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.15.1s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.15.2s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.15.3s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.15.4s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.16.0cs:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.16.0s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.16.1as:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.16.2s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.16.3s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.16.4as:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.16.4bs:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.16.4ds:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.16.5s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.16.6bs:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.16.6s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.16.7as:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.16.7bs:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.16.7s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.16.8s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.16.9s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.16.10s:*:*:*:*:*:*:*

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