CVE-2013-5475

CVE-2013-5475 is a high-severity vulnerability in Cisco Ios Xe with a CVSS 2.0 base score of 7.8. 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-20.

Key facts

• Severity: High (CVSS 2.0 base score 7.8)
• EPSS exploit prediction: 2% (77th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-20
• Affected product: Cisco Ios Xe
• Published: 2013-09-27
• Last modified: 2026-06-16

Description

Cisco IOS 12.2 through 12.4 and 15.0 through 15.3, and IOS XE 2.1 through 3.9, allows remote attackers to cause a denial of service (device reload) via crafted DHCP packets that are processed locally by a (1) server or (2) relay agent, aka Bug ID CSCug31561.

Frequently asked questions

What is CVE-2013-5475?

Cisco IOS 12.2 through 12.4 and 15.0 through 15.3, and IOS XE 2.1 through 3.9, allows remote attackers to cause a denial of service (device reload) via crafted DHCP packets that are processed locally by a (1) server or (2) relay agent, aka Bug ID CSCug31561.

How severe is CVE-2013-5475?

CVE-2013-5475 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2013-5475 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-5475?

CVE-2013-5475 primarily affects Cisco Ios Xe. In total, 68 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-5475?

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.

When was CVE-2013-5475 published?

CVE-2013-5475 was published on 2013-09-27 and last updated on 2026-06-16.

References

• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130925-dhcp

Affected products (68)

• cpe:2.3:o:cisco:ios_xe:2.1.0:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:2.1.1:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:2.1.2:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:2.2.1:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:2.2.2:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:2.2.3:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:2.3.0:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:2.3.1:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:2.3.1t:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:2.3.2:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:2.4.0:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:2.4.1:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:2.4.2:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:2.4.3:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:2.4.4:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:2.5.0:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:2.5.1:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:2.5.2:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:2.6.0:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:2.6.1:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:2.6.2:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:3.1.0s:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:3.1.0sg:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:3.1.1s:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:3.1.1sg:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:3.1.2s:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:3.1.3s:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:3.1.4s:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:3.2.00.xo.15.0\(2\)xo:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:3.2.0s:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:3.2.0sg:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:3.2.0xo:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:3.2.1s:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:3.2.1sg:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:3.2.2s:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:3.2.2sg:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:3.2.3sg:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:3.2.4sg:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:3.3.0s:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios_xe:3.3.0sg:*:*:*:*:*:*:*

More vulnerabilities in Cisco Ios Xe

• CVE-2025-20188 — Critical (CVSS 10.0): A vulnerability in the Out-of-Band Access Point (AP) Image Download, the Clean Air Spectral Recording, and the client…
• CVE-2023-20198 — Critical (CVSS 10.0): Cisco is providing an update for the ongoing investigation into observed exploitation of the web UI feature in Cisco…
• CVE-2021-34770 — Critical (CVSS 10.0): A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE…
• CVE-2019-12643 — Critical (CVSS 10.0): A vulnerability in the Cisco REST API virtual service container for Cisco IOS XE Software could allow an…
• CVE-2021-1619 — Critical (CVSS 9.8): A vulnerability in the authentication, authorization, and accounting (AAA) function of Cisco IOS XE Software could…
• CVE-2020-3227 — Critical (CVSS 9.8): A vulnerability in the authorization controls for the Cisco IOx application hosting infrastructure in Cisco IOS XE…

All CVEs affecting Cisco Ios Xe →

Other CWE-20 (Improper Input Validation) vulnerabilities

• CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
• CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
• CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
• CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
• CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
• CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →