CVE-2026-2379
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Arista EOS IPsec Tunnel Sequence Number Mismatch via Interface Flaps when Anti-Replay is Disabled
On affected platforms with hardware IPSec support running Arista EOS with certain IPsec features enabled, EOS may exhibit unexpected behavior in specific cases. Physical interface flaps and certain agent restarts can cause IPsec tunnel re-establishment with existing Security Associations, resulting in sequence number mismatches between tunnel endpoints potentially causing unstable communication.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
EOS
- Vendor
- Arista Networks
- Product
- EOS
- Platforms
- 7280R3 Series with IPsec (DCS-7280SR3AK
- DCS-7280SR3AM
- DCS-7280CR3AK
- DCS-7280CR3AM
- DCS-7280CR3MK
- DCS-7280DR3AK
- DCS-7280DR3AM
- DCS-7289R3AK-SC
- DCS-7289R3AM-SC)
- 7800R3 Series with IPsec (7800R3A-36DM-LC
- 7800R3AK-36DM-LC
- 7800R3A-36PM-LC
- 7800R3AK-36PM-LC
- 7800R3A-36DM2-LC
- 7800R3AK-36DM2-LC)
- AWE 7000 Series with IPsec (AWE-7250R-16S-F
- AWE-7230R-4TX-4S-F
- AWE-7220RP-5TH-2S-F)
- AWE 5000 Series with IPsec (AWE-5510
- AWE-5310)
- CloudEOS VM
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.34.0 | affected | custom | Unavailable | 4.34.3M | None listed |
| 4.33.0M | affected | custom | Unavailable | 4.33.5M | None listed |
| 4.32.0M | affected | custom | Unavailable | 4.32.7M | None listed |
| 4.31.0M | affected | custom | Unavailable | 4.31.9M | None listed |
| 4.30.0F | affected | custom | 4.31.0 | Unavailable | None listed |
| 4.29.0F | affected | custom | 4.30.0 | Unavailable | None listed |
| 4.28.0F | affected | custom | 4.29.0 | Unavailable | None listed |
| 4.27.1F | affected | custom | 4.28.0 | Unavailable | None listed |