CVE-2024-20276
CVE-2024-20276 is a high-severity vulnerability in Cisco Ios 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-248.
Key facts
- Severity: High (CVSS 3.x base score 7.4)
- EPSS exploit prediction: 0% (21st percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-17991
- Weakness: CWE-248
- Affected product: Cisco Ios
- Published:
- Last modified:
Description
A vulnerability in Cisco IOS Software for Cisco Catalyst 6000 Series Switches could allow an unauthenticated, adjacent attacker to cause an affected device to reload unexpectedly. This vulnerability is due to improper handling of process-switched traffic. An attacker could exploit this vulnerability by sending crafted traffic to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.
Frequently asked questions
- What is CVE-2024-20276?
- A vulnerability in Cisco IOS Software for Cisco Catalyst 6000 Series Switches could allow an unauthenticated, adjacent attacker to cause an affected device to reload unexpectedly. This vulnerability is due to improper handling of process-switched traffic. An attacker could exploit this vulnerability by sending crafted traffic to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.
- How severe is CVE-2024-20276?
- CVE-2024-20276 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-2024-20276 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2024-20276?
- CVE-2024-20276 primarily affects Cisco Ios. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2024-20276?
- 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-2024-20276 have an EU (EUVD) identifier?
- Yes. CVE-2024-20276 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-17991.
- When was CVE-2024-20276 published?
- CVE-2024-20276 was published on 2024-03-27 and last updated on 2026-06-17.
References
Affected products (7)
- cpe:2.3:o:cisco:ios:15.5\(1\)sy5:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.5\(1\)sy6:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.5\(1\)sy7:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.5\(1\)sy8:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.5\(1\)sy9:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.5\(1\)sy10:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.5\(1\)sy11:*:*:*:*:*:*:*
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