02 Records
FEED: ACQUIRING
01 RecordSTATE: PUBLISHED
02 Description
CNA: AristaOn affected platforms running Arista EOS with MACsec configuration, a specially crafted packet can cause the MACsec process to terminate unexpectedly. Continuous receipt of these packets with certain MACsec configurations can cause longer term disruption o
03 Exploitation and scoring
SRC: CISA, FIRST, NVD, RED HAT- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.- EPSS probability
- 0.18% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Ranks above 7.8% of scored records. A rank, not a probability.
- NVD base score
- 5.3 (CVSS v4.0), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/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
- NVD analysis status
- Deferred. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
SCHEMA: 5.2
- Published
- 2026-01-06 19:15Z8 MO AGO
- Last updated
- 2026-01-06 19:44Z8 MO AGO
- Reserved
- 2025-07-03
- Assigning CNA
- Arista
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.3)
- CNA CVSS vector
- CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
- Weaknesses
- CWE-805Buffer Access with Incorrect Length ValueBase
- Data version
- 5.2
- Document digest
- 666fba034b81e436dcfd95298c3959dd96a8f011946454582e9bab6801ad1b45
05 Affected products
PAIRS: 1VendorProductVersionsPlatforms
Arista NetworksEOS4.34.3.0 to 4.34.3.1M, 4.33.0 to 4.33.5M, 4.32.0 to 4.32.7M, 4.31.0 to 4.31.9M, 0 to < 4.30.07500R/R2, 7388-8D, 7800/R3/R3A, 722XPM, 720XPM, 750X, 7050X3/X4, 7170, 7280R/R2/R3/R3A/R4, 7289R3, cEOS-lab, vEOS-lab SRC: CNA
The recommended resolution is to upgrade to a remediated software version at your earliest convenience. Arista recommends customers move to the latest version of each release that contains all the fixes listed below.
For more information about upgrading see EOS User Manual: Upgrades and Downgrades https://www.arista.com/en/um-eos/eos-upgrades-and-downgrades
CVE-2025-7048 has been fixed in the following releases:
* 4.35.0F and later releases
* 4.34.4M and later releases in the 4.34.x train
* 4.33.6M and later releases in the 4.33.x train
* 4.32.8M and later releases in the 4.32.x train
* 4.31.10M and later releases in the 4.31.x train