CVE-2025-8870: arista networks eos Uncaught Exception
CVSS: 5.6v4.0MediumDeferred
Published 14-11-2025Last modified 14-11-2025
Vulnerability summary
CVE-2025-8870 is a medium (CVSS 5.6) Uncaught Exception vulnerability in arista networks eos. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 6.8% of scored vulnerabilities.
CVSS score
5.6/10
010
Medium · v4.0 (CVE.org)EPSS score
0.18%
0%100%
Low · +0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 14-11-2025PublishedVulnerability first disclosed.
- 14-11-2025Last modifiedVulnerability information updated.
Description
On affected platforms running Arista EOS, certain serial console input might result in an unexpected reload of the device.153
CVSS metrics
4 scores · 2 sources · 2 versionsMedium 5.6Preferred score · CVE.org (CNA)
CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:HSourcesAll 2 agree
- NVDNIST5.6MediumCVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Medium 4.9Preferred score · CVE.org (CNA)
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:HSourcesAll 2 agree
- NVDNIST4.9MediumCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS trend
Probability
0.18%
Chance of exploitation in the next 30 days
Percentile
7%
Versus all other CVEs
30-day change
+0.01 pp
From 0.17% on 19-09-2026
19-09-202619-10-2026
EPSS score0.18%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Arista networks1 product
- eos4.34.2FX
1 vendor · 1 product