CVE-2025-20141
CVE-2025-20141 is a high-severity vulnerability in Cisco Ios Xr with a CVSS 3.x base score of 7.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-770.
Key facts
- Severity: High (CVSS 3.x base score 7.4)
- EPSS exploit prediction: 0% (14th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-7288
- Weakness: CWE-770
- Affected product: Cisco Ios Xr
- Published:
- Last modified:
Description
A vulnerability in the handling of specific packets that are punted from a line card to a route processor in Cisco IOS XR Software Release 7.9.2 could allow an unauthenticated, adjacent attacker to cause control plane traffic to stop working on multiple Cisco IOS XR platforms. This vulnerability is due to incorrect handling of packets that are punted to the route processor. An attacker could exploit this vulnerability by sending traffic, which must be handled by the Linux stack on the route processor, to an affected device. A successful exploit could allow the attacker to cause control plane traffic to stop working, resulting in a denial of service (DoS) condition.
Frequently asked questions
- What is CVE-2025-20141?
- A vulnerability in the handling of specific packets that are punted from a line card to a route processor in Cisco IOS XR Software Release 7.9.2 could allow an unauthenticated, adjacent attacker to cause control plane traffic to stop working on multiple Cisco IOS XR platforms. This vulnerability is due to incorrect handling of packets that are punted to the route processor. An attacker could exploit this vulnerability by sending traffic, which must be handled by the Linux stack on the route processor, to an affected device. A successful exploit could allow the attacker to cause control plane traffic to stop working, resulting in a denial of service (DoS) condition.
- How severe is CVE-2025-20141?
- CVE-2025-20141 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2025-20141 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-20141?
- CVE-2025-20141 affects Cisco Ios Xr. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-20141?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2025-20141 have an EU (EUVD) identifier?
- Yes. CVE-2025-20141 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-7288.
- When was CVE-2025-20141 published?
- CVE-2025-20141 was published on 2025-03-12 and last updated on 2026-06-17.
References
- https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xr792-bWfVDPY
Affected products (1)
- cpe:2.3:o:cisco:ios_xr:7.9.2:*:*:*:*:*:*:*
More vulnerabilities in Cisco Ios Xr
- CVE-2026-20274 — Critical (CVSS 9.8): As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering…
- CVE-2020-3284 — Critical (CVSS 9.8): A vulnerability in the enhanced Preboot eXecution Environment (PXE) boot loader for Cisco IOS XR 64-bit Software could…
- CVE-2019-1710 — Critical (CVSS 9.8): A vulnerability in the sysadmin virtual machine (VM) on Cisco ASR 9000 Series Aggregation Services Routers running…
- CVE-2025-20363 — Critical (CVSS 9.0): A vulnerability in the web services of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco Secure…
- CVE-2026-20280 — High (CVSS 8.8): As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software…
- CVE-2026-20046 — High (CVSS 8.8): A vulnerability in task group assignment for a specific CLI command in Cisco IOS XR Software could allow an…
All CVEs affecting Cisco Ios Xr →
Other CWE-770 (Allocation of Resources Without Limits or Throttling) vulnerabilities
- CVE-2026-63299 — Critical (CVSS 9.9): An authorization bypass vulnerability in LXD allows an authenticated user to bypass project-level disk and volume…
- CVE-2026-82439 — Critical (CVSS 9.8): Description The DRPC server kept a map from function name to request queue and created an entry the first time…
- CVE-2026-47891 — Critical (CVSS 9.8): A Spring WebFlux application that relies on the Aalto XML processor to parse XML input does not correctly enforce the…
- CVE-2026-74878 — Critical (CVSS 9.8): openssl_encrypt versions before 1.4.0 use an in-memory rate limiter for TOTP brute-force protection that is not shared…
- CVE-2026-31283 — Critical (CVSS 9.8): In Totara LMS v19.1.5 and before, the forgot password API does not implement rate limiting for the target email…
- CVE-2020-37067 — Critical (CVSS 9.8): Filetto 1.0 FTP server contains a denial of service vulnerability in the FEAT command processing that allows attackers…
Browse all CWE-770 (Allocation of Resources Without Limits or Throttling) vulnerabilities →