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01 Record

CVE-2025-20209

Cisco IOS XR Software Internet Key Exchange Version 2 Denial of Service Vulnerability

HighPUBLISHEDCNA: cisco
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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02 Description

Cisco IOS XR Software Internet Key Exchange Version 2 Denial of Service Vulnerability

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.54% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 45.6% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2025-03-12 16:13Z1 YR AGO
Last updated
2025-03-12 17:51Z1 YR AGO
Reserved
2024-10-10
Assigning CNA
cisco
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-770Allocation of Resources Without Limits or ThrottlingBase
Data version
5.1
Document digest
75b9d4191c754d73f9a60f046fd76e982d983bd4511ae71a44177679ef27fd3d

05 Affected products

VendorProductVersionsPlatforms
CiscoCisco IOS XR Software6.5.3, 6.6.1, 6.5.2, 6.6.2, 6.5.1, 7.0.1, 6.6.25, 7.0.0, 7.1.1, 6.6.3, 7.0.2, 7.2.0, 7.1.2, 7.2.1, 7.3.1, 7.4.1, 7.2.2, 7.3.2, 7.5.1, 7.3.27, 7.6.1, 7.5.2, 7.7.1, 7.4.2, 7.6.2, 7.8.1, 7.7.2, 7.9.1, 7.8.2, 7.8.22, 7.10.1, 7.7.21, 7.9.2, 7.11.1, 7.10.2, 24.1.1, 7.11.2, 24.2.1, 24.1.2, 24.2.11—

06 References