CVE-2026-2379
CVE-2026-2379 is a medium-severity vulnerability with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-672.
Key facts
- Severity: Medium (CVSS 3.x base score 5.9)
- CVSS v4: 8.2
- EPSS exploit prediction: 0% (13th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-34875
- Weakness: CWE-672
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2026-2379?
- 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.
- How severe is CVE-2026-2379?
- CVE-2026-2379 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2026-2379 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-2379?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-2379 have an EU (EUVD) identifier?
- Yes. CVE-2026-2379 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34875.
- When was CVE-2026-2379 published?
- CVE-2026-2379 was published on 2026-06-05 and last updated on 2026-06-17.
References
Other CWE-672 (Operation on a Resource after Expiration or Release) vulnerabilities
- CVE-2023-41094 — Critical (CVSS 10.0): TouchLink packets processed after timeout or out of range due to Operation on a Resource after Expiration and Missing…
- CVE-2020-24030 — Critical (CVSS 9.8): ForLogic Qualiex v1 and v3 has weak token expiration. This allows remote unauthenticated privilege escalation and…
- CVE-2020-12043 — Critical (CVSS 9.8): The Baxter Spectrum WBM (v17, v20D29, v20D30, v20D31, and v22D24) when configured for wireless networking the FTP…
- CVE-2019-17638 — Critical (CVSS 9.4): In Eclipse Jetty, versions 9.4.27.v20200227 to 9.4.29.v20200521, in case of too large response headers, Jetty throws an…
- CVE-2013-10075 — Critical (CVSS 9.1): Apache::Session versions through 1.94 for Perl re-creates deleted sessions. The session stores…
- CVE-2022-22755 — High (CVSS 8.8): By using XSL Transforms, a malicious webserver could have served a user an XSL document that would continue to execute…
Browse all CWE-672 (Operation on a Resource after Expiration or Release) vulnerabilities →