CVE-2025-20154 Details
A vulnerability in the Two-Way Active Measurement Protocol (TWAMP) server feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. For Cisco IOS XR Software, this vulnerability could cause the ipsla_ippm_server process to reload unexpectedly if debugs are enabled.

This vulnerability is due to out-of-bounds array access when processing specially crafted TWAMP control packets. An attacker could exploit this vulnerability by sending crafted TWAMP control packets to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.
Note: For Cisco IOS XR Software, only the ipsla_ippm_server process reloads unexpectedly and only when debugs are enabled. The vulnerability details for Cisco IOS XR Software are as follows:    Security Impact Rating (SIR): Low    CVSS Base Score: 3.7    CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2025-20154
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.17 Probability of exploitation activity being observed over the next 30 days (38th percentile)
CVSS score for CVE-2025-20154
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
8.6 High
Products affected by CVE-2025-20154
IOS 12.2\(33\)srd5
IOS 12.2\(33\)sre6
IOS 12.2\(33\)sre7a
IOS 12.2\(33\)sre8
IOS 12.2\(33\)sxi3
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2025-20154 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
RU 428 28.48%
US 216 14.37%
ZW 185 12.31%
IE 72 4.79%
DE 72 4.79%
JP 58 3.86%
ZA 47 3.13%
AU 34 2.26%
IN 33 2.20%
FR 31 2.06%

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CVE-2025-20154 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 679 62.58%
Telecommunications 397 36.59%
Food Production 3 0.28%
Government/Politics 2 0.18%
Retail 1 0.09%
Utilities 1 0.09%
Education 1 0.09%
Manufacturing 1 0.09%

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