8.6

CVE-2025-20154: cisco cisco ios xr software Improper Input Validation

CVSS: 8.6v3.1HighAnalyzed
Published 07-05-2025Last modified 07-05-2025
Open JSON

Vulnerability summary

CVE-2025-20154 is a high (CVSS 8.6) Improper Input Validation vulnerability in cisco cisco ios xr software. EPSS estimates a 0.54% chance of exploitation in the next 30 days, higher than 43.9% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.6/10
010
High · v3.1 (CVE.org)
EPSS score
0.54%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 07-05-2025
    PublishedVulnerability first disclosed.
  2. 07-05-2025
    Last modifiedVulnerability information updated.

Description

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

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.54%

Chance of exploitation in the next 30 days

Percentile

44%

Versus all other CVEs

30-day change

+0.02 pp

From 0.51% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.54%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Cisco4 products
  • cisco ios xr software6.5.3 | 6.5.29 | 6.5.1 | 6.6.1 | 6.5.2 | 6.5.92 | 6.5.15 | 6.6.2 | 7.0.1 | 6.6.25 | 6.5.26 | 6.6.11 | 6.5.25 | 6.5.28 | 6.5.93 | 6.6.12 | 6.5.90 | 7.0.0 | 7.1.1 | 7.0.90 | 6.6.3 | 6.7.1 | 7.0.2 | 7.1.15 | 7.2.0 | 7.2.1 | 7.1.2 | 6.7.2 | 7.0.11 | 7.0.12 | 7.0.14 | 7.1.25 | 6.6.4 | 7.2.12 | 7.3.1 | 7.1.3 | 6.7.3 | 7.4.1 | 7.2.2 | 6.7.4 | 6.5.31 | 7.3.15 | 7.3.16 | 6.8.1 | 7.4.15 | 6.5.32 | 7.3.2 | 7.5.1 | 7.4.16 | 7.3.27 | 7.6.1 | 7.5.2 | 7.8.1 | 7.6.15 | 7.5.12 | 7.3.3 | 7.7.1 | 6.8.2 | 7.3.4 | 7.4.2 | 6.7.35 | 6.9.1 | 7.6.2 | 7.5.3 | 7.7.2 | 6.9.2 | 7.9.1 | 7.10.1 | 7.8.2 | 7.5.4 | 6.5.33 | 7.8.22 | 7.7.21 | 7.9.2 | 7.3.5 | 7.5.5 | 7.11.1 | 7.9.21 | 7.10.2 | 24.1.1 | 7.6.3 | 7.3.6 | 7.11.2 | 24.2.1 | 24.1.2 | 24.2.11 | 24.3.1 | 24.2.2 | 7.8.23 | 7.11.21 | 24.2.20 | 6.5.35
  • ios≤ 15.9\(3\)m11
  • ios_xe≥ 16.6.1, ≤ 17.2.3
  • ios_xr6.5.1 | 6.5.2 | 6.5.3 | 6.5.15 | 6.5.25 | 6.5.26 | 6.5.28 | 6.5.29 | 6.5.31 | 6.5.32 | 6.5.33 | 6.5.35 | 6.5.90 | 6.5.92 | 6.5.93 | 6.6.1 | 6.6.2 | 6.6.3 | 6.6.4 | 6.6.11 | 6.6.12 | 6.6.25 | 6.7.1 | 6.7.2 | 6.7.3 | 6.7.4 | 6.7.35 | 6.8.1 | 6.8.2 | 6.9.1 | 6.9.2 | 7.0.0 | 7.0.1 | 7.0.2 | 7.0.11 | 7.0.12 | 7.0.14 | 7.0.90 | 7.1.1 | 7.1.2 | 7.1.3 | 7.1.15 | 7.1.25 | 7.2.0 | 7.2.1 | 7.2.2 | 7.2.12 | 7.3.1 | 7.3.2 | 7.3.3 | 7.3.4 | 7.3.5 | 7.3.6 | 7.3.15 | 7.3.16 | 7.3.27 | 7.4.1 | 7.4.2 | 7.4.15 | 7.4.16 | 7.5.1 | 7.5.2 | 7.5.3 | 7.5.4 | 7.5.5 | 7.5.12 | 7.6.1 | 7.6.2 | 7.6.3 | 7.6.15 | 7.7.1 | 7.7.2 | 7.7.21 | 7.8.1 | 7.8.2 | 7.8.22 | 7.8.23 | 7.9.1 | 7.9.2 | 7.9.21 | 7.10.1 | 7.10.2 | 7.11.1 | 7.11.2 | 7.11.21 | 24.1.1 | 24.1.2 | 24.2.1 | 24.2.2 | 24.2.11 | 24.2.20 | 24.3.1

1 vendor · 4 products

References

1 links