| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 7.8 | $0-$5k | 0.00 |
Summary
A vulnerability labeled as critical has been found in Cisco IOS and IOS XE. This affects an unknown function of the component LISP Handler. Executing a manipulation can lead to recursion. This vulnerability is registered as CVE-2024-20311. It is possible to launch the attack remotely. No exploit is available. The affected component should be upgraded.
Details
A vulnerability classified as critical was found in Cisco IOS and IOS XE (the affected version unknown). This vulnerability affects an unknown part of the component LISP Handler. The manipulation with an unknown input leads to a recursion vulnerability. The CWE definition for the vulnerability is CWE-674. The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack. As an impact it is known to affect availability. CVE summarizes:
A vulnerability in the Locator ID Separation Protocol (LISP) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. This vulnerability is due to the incorrect handling of LISP packets. An attacker could exploit this vulnerability by sending a crafted LISP packet to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition. Note: This vulnerability could be exploited over either IPv4 or IPv6 transport.
The advisory is available at sec.cloudapps.cisco.com. This vulnerability was named CVE-2024-20311 since 11/08/2023. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.
Upgrading eliminates this vulnerability.
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Product
Type
Vendor
Name
License
Website
- Vendor: https://www.cisco.com/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.9VulDB Meta Temp Score: 7.8
VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.5
NVD Vector: 🔍
CNA Base Score: 8.6
CNA Vector (Cisco Systems, Inc.): 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
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| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: RecursionCWE: CWE-674 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Timeline
11/08/2023 🔍03/27/2024 🔍
03/27/2024 🔍
07/30/2025 🔍
Sources
Vendor: cisco.comAdvisory: cisco-sa-lisp-3gYXs3qP
Status: Confirmed
CVE: CVE-2024-20311 (🔍)
GCVE (CVE): GCVE-0-2024-20311
GCVE (VulDB): GCVE-100-258310
scip Labs: https://www.scip.ch/en/?labs.20150108
Entry
Created: 03/27/2024 18:15Updated: 07/30/2025 16:34
Changes: 03/27/2024 18:15 (63), 05/06/2024 12:47 (1), 07/30/2025 16:34 (13)
Complete: 🔍
Cache ID: 216::103
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