CVE-2020-15898
CVE-2020-15898 is a medium-severity vulnerability in Arista Eos with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Medium (CVSS 3.x base score 5.3)
- CVSS v2: 5.0
- EPSS exploit prediction: 1% (58th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Arista Eos
- Published:
- Last modified:
Description
In Arista EOS malformed packets can be incorrectly forwarded across VLAN boundaries in one direction. This vulnerability is only susceptible to exploitation by unidirectional traffic (ex. UDP) and not bidirectional traffic (ex. TCP). This affects: EOS 7170 platforms version 4.21.4.1F and below releases in the 4.21.x train; EOS X-Series versions 4.21.11M and below releases in the 4.21.x train; 4.22.6M and below releases in the 4.22.x train; 4.23.4M and below releases in the 4.23.x train; 4.24.2.1F and below releases in the 4.24.x train.
Frequently asked questions
- What is CVE-2020-15898?
- In Arista EOS malformed packets can be incorrectly forwarded across VLAN boundaries in one direction. This vulnerability is only susceptible to exploitation by unidirectional traffic (ex. UDP) and not bidirectional traffic (ex. TCP). This affects: EOS 7170 platforms version 4.21.4.1F and below releases in the 4.21.x train; EOS X-Series versions 4.21.11M and below releases in the 4.21.x train; 4.22.6M and below releases in the 4.22.x train; 4.23.4M and below releases in the 4.23.x train; 4.24.2.1F and below releases in the 4.24.x train.
- How severe is CVE-2020-15898?
- CVE-2020-15898 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
- Is CVE-2020-15898 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-15898?
- CVE-2020-15898 affects Arista Eos. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-15898?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2020-15898 published?
- CVE-2020-15898 was published on 2020-12-28 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*
More vulnerabilities in Arista Eos
- CVE-2015-8236 — Critical (CVSS 10.0): Arista EOS before 4.11.12, 4.12 before 4.12.11, 4.13 before 4.13.14M, 4.14 before 4.14.5FX.5, and 4.15 before…
- CVE-2020-10188 — Critical (CVSS 9.8): utility.c in telnetd in netkit telnet through 0.17 allows remote attackers to execute arbitrary code via short writes…
- CVE-2017-18017 — Critical (CVSS 9.8): The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel before 4.11, and 4.9.x before…
- CVE-2017-14491 — Critical (CVSS 9.8): Heap-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or…
- CVE-2014-7169 — Critical (CVSS 9.8): GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed function definitions in the values…
- CVE-2014-6271 — Critical (CVSS 9.8): GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables,…