5.3

CVE-2024-20390: cisco cisco ios xr software

CVSS: 5.3v3.1MediumAnalyzed
Published 11-09-2024Last modified 11-09-2024
Open JSON

Vulnerability summary

CVE-2024-20390 is a medium (CVSS 5.3) vulnerability in cisco cisco ios xr software. EPSS estimates a 0.44% chance of exploitation in the next 30 days, higher than 36.6% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.44%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-09-2024
    PublishedVulnerability first disclosed.
  2. 11-09-2024
    Last modifiedVulnerability information updated.

Description

A vulnerability in the Dedicated XML Agent feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) on XML TCP listen port 38751. This vulnerability is due to a lack of proper error validation of ingress XML packets. An attacker could exploit this vulnerability by sending a sustained, crafted stream of XML traffic to a targeted device. A successful exploit could allow the attacker to cause XML TCP port 38751 to become unreachable while the attack traffic persists.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.44%

Chance of exploitation in the next 30 days

Percentile

37%

Versus all other CVEs

30-day change

0.00 pp

From 0.44% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.44%

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

Cisco2 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 | 7.8.12 | 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 | 7.5.52 | 7.11.2 | 24.2.1
  • ios_xr< 24.1.2

1 vendor · 2 products

References

1 links