CVE-2021-31895
Vulnerability Scoring
As a catastrophic security flaw, CVE-2021-31895 has severe implications, demanding immediate intervention.
As a catastrophic security flaw, CVE-2021-31895 has severe implications, demanding immediate intervention.
Status: Modified
Last updated: 🕕 21 Nov 2024, 06:06 UTC
Originally published on: 🕚 13 Jul 2021, 11:15 UTC
Time between publication and last update: 1226 days
CVSS Release: version 3
nvd@nist.gov
Primary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE-2021-31895: A vulnerability has been identified in RUGGEDCOM ROS M2100 (All versions < V4.3.7), RUGGEDCOM ROS M2200 (All versions < V4.3.7), RUGGEDCOM ROS M969 (All versions < V4.3.7), RUGGEDCOM ROS RMC (All versions < V4.3.7), RUGGEDCOM ROS RMC20 (All versions < V4.3.7), RUGGEDCOM ROS RMC30 (All versions < V4.3.7), RUGGEDCOM ROS RMC40 (All versions < V4.3.7), RUGGEDCOM ROS RMC41 (All versions < V4.3.7), RUGGEDCOM ROS RMC8388 V4.X (All versions < V4.3.7), RUGGEDCOM ROS RMC8388 V5.X (All versions < V5.5.4), RUGGEDCOM ROS RP110 (All versions < V4.3.7), RUGGEDCOM ROS RS400 (All versions < V4.3.7), RUGGEDCOM ROS RS401 (All versions < V4.3.7), RUGGEDCOM ROS RS416 (All versions < V4.3.7), RUGGEDCOM ROS RS416v2 V4.X (All versions < V4.3.7), RUGGEDCOM ROS RS416v2 V5.X (All versions < 5.5.4), RUGGEDCOM ROS RS8000 (All versions < V4.3.7), RUGGEDCOM ROS RS8000A (All versions < V4.3.7), RUGGEDCOM ROS RS8000H (All versions < V4.3.7), RUGGEDCOM ROS RS8000T (All versions < V4.3.7), RUGGEDCOM ROS RS900 (32M) V4.X (All versions < V4.3.7), RUGGEDCOM ROS RS900 (32M) V5.X (All versions < V5.5.4), RUGGEDCOM ROS RS900G (All versions < V4.3.7), RUGGEDCOM ROS RS900G (32M) V4.X (All versions < V4.3.7), RUGGEDCOM ROS RS900G (32M) V5.X (All versions < V5.5.4), RUGGEDCOM ROS RS900GP (All versions < V4.3.7), RUGGEDCOM ROS RS900L (All versions < V4.3.7), RUGGEDCOM ROS RS900W (All versions < V4.3.7), RUGGEDCOM ROS RS910 (All versions < V4.3.7), RUGGEDCOM ROS RS910L (All versions < V4.3.7), RUGGEDCOM ROS RS910W (All versions < V4.3.7), RUGGEDCOM ROS RS920L (All versions < V4.3.7), RUGGEDCOM ROS RS920W (All versions < V4.3.7), RUGGEDCOM ROS RS930L (All versions < V4.3.7), RUGGEDCOM ROS RS930W (All versions < V4.3.7), RUGGEDCOM ROS RS940G (All versions < V4.3.7), RUGGEDCOM ROS RS969 (All versions < V4.3.7), RUGGEDCOM ROS RSG2100 (32M) V4.X (All versions < V4.3.7), RUGGEDCOM ROS RSG2100 (32M) V5.X (All versions < V5.5.4), RUGGEDCOM ROS RSG2100 V4.X (All versions < V4.3.7), RUGGEDCOM ROS RSG2100P (All versions < V4.3.7), RUGGEDCOM ROS RSG2100P (32M) V4.X (All versions < V4.3.7), RUGGEDCOM ROS RSG2100P (32M) V5.X (All versions < V5.5.4), RUGGEDCOM ROS RSG2200 (All versions < V4.3.7), RUGGEDCOM ROS RSG2288 V4.X (All versions < V4.3.7), RUGGEDCOM ROS RSG2288 V5.X (All versions < V5.5.4), RUGGEDCOM ROS RSG2300 V4.X (All versions < V4.3.7), RUGGEDCOM ROS RSG2300 V5.X (All versions < V5.5.4), RUGGEDCOM ROS RSG2300P V4.X (All versions < V4.3.7), RUGGEDCOM ROS RSG2300P V5.X (All versions < V5.5.4), RUGGEDCOM ROS RSG2488 V4.X (All versions < V4.3.7), RUGGEDCOM ROS RSG2488 V5.X (All versions < V5.5.4), RUGGEDCOM ROS RSG900 V4.X (All versions < V4.3.7), RUGGEDCOM ROS RSG900 V5.X (All versions < V5.5.4), RUGGEDCOM ROS RSG900C (All versions < V5.5.4), RUGGEDCOM ROS RSG900G V4.X (All versions < V4.3.7), RUGGEDCOM ROS RSG900G V5.X (All versions < V5.5.4), RUGGEDCOM ROS RSG900R (All versions < V5.5.4), RUGGEDCOM ROS RSG920P V4.X (All versions < V4.3.7), RUGGEDCOM ROS RSG920P V5.X (All versions < V5.5.4), RUGGEDCOM ROS RSL910 (All versions < V5.5.4), RUGGEDCOM ROS RST2228 (All versions < V5.5.4), RUGGEDCOM ROS RST916C (All versions < V5.5.4), RUGGEDCOM ROS RST916P (All versions < V5.5.4), RUGGEDCOM ROS i800 (All versions < V4.3.7), RUGGEDCOM ROS i801 (All versions < V4.3.7), RUGGEDCOM ROS i802 (All versions < V4.3.7), RUGGEDCOM ROS i803 (All versions < V4.3.7). The DHCP client in affected devices fails to properly sanitize incoming DHCP packets. This could allow an unauthenticated remote attacker to cause memory to be overwritten, potentially allowing remote code execution.
The exploitability of CVE-2021-31895 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
With low attack complexity and no required privileges, CVE-2021-31895 is an easy target for cybercriminals. Organizations should prioritize immediate mitigation measures to prevent unauthorized access and data breaches.
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
Above is the CVSS Sub-score Breakdown for CVE-2021-31895, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
Below is the Impact Analysis for CVE-2021-31895, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
The EPSS score estimates the probability that this vulnerability will be exploited in the near future.
EPSS Score: 0.541% (probability of exploit)
EPSS Percentile: 77.61%
(lower percentile = lower relative risk)
This vulnerability is less risky than approximately 22.39% of others.
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