CVE-2024-20390
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.
Key facts
- CVSS score
- 5.3 (v3.1)
- Severity
- MEDIUM
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L- Weakness (CWE)
- CWE-940
- EPSS score
- 0.4% (36th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2024-18105)
- Published
- September 11, 2024
- NVD last modified
- June 17, 2026
- Status
- Analyzed
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2024-18105 in the EU Vulnerability Database. Last updated in EUVD on September 11, 2024.
View on the EU Vulnerability DatabaseAffected products
- cisco / ios xr
Certified products that may be affected
1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.
- Cisco Network Convergence System 540, 5500 and 5700 (NCS540, NCS5500, NCS5700) Series running IOS-XR, version 7.4.1 - Cisco Systems, Inc. - Common Criteria NSCIB-CC-23-0597525-CR - active
References
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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