CVE-2026-34992

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.1% (1st percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3

Also known asEUVD-2026-19368 (ENISA EUVD)Source: ENISA EUVD

7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Antrea is a Kubernetes networking solution intended to be Kubernetes native. Prior to 2.4.5 and 2.5.2, a missing encryption vulnerability affects inter-Node Pod traffic. In Antrea clusters configured for dual-stack networking with IPsec encryption enabled (trafficEncryptionMode: ipsec), Antrea fails to apply encryption for IPv6 Pod traffic. While the IPv4 traffic is correctly encrypted via ESP (Encapsulating Security Payload), traffic using IPv6 is transmitted in plaintext. This occurs because the packets are encapsulated (using Geneve or VXLAN) but bypass the IPsec encryption layer. Impacted Users: users with dual-stack clusters and IPsec encryption enabled. Single-stack IPv4 or IPv6 clusters are not affected. This vulnerability is fixed in 2.4.5 and 2.5.2.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
34
EG Risk 34/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
1st
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.1% within 30 daysSource: FIRST EPSS. FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

April 6, 2026

Last Modified

April 27, 2026

Advisory Details (5)

Auto-updated Aug 2, 2026
Patch available. Sources: github_commit, github_pr, github.
GitHub advisoryMentions a patch (unverified)

IPsec fails to encrypt secondary IP family traffic in dual-stack clusters · Advisory · antrea-io/antrea · GitHub

https://github.com/antrea-io/antrea/security/advisories/GHSA-qcmw-8mm4-4p28
GitHub pull request

Support IPv6 traffic over IPv4 IPsec tunnel

Fix merged in antrea-io/antrea PR #7759 on 2026-02-25 — awaiting tagged release

https://github.com/antrea-io/antrea/pull/7759
GitHub pull request

Add IPsec validation test to antctl check installation

Fix merged in antrea-io/antrea PR #7757 on 2026-02-27 — awaiting tagged release

https://github.com/antrea-io/antrea/pull/7757
GitHub commit

commit 738bad662b20 (antrea-io/antrea)

Fix landed in antrea-io/antrea commit 738bad662b20 — awaiting tagged release

https://github.com/antrea-io/antrea/commit/738bad662b20a5d358d19466936176ef580a9b07
Web page

antrea/docs/traffic-encryption.md at main · antrea-io/antrea · GitHub

https://github.com/antrea-io/antrea/blob/main/docs/traffic-encryption.md

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFix by version rangeDependents
antrea.io/antrea—
  • 1.11.0 on: no fix on record
  • 2.5.0 on: no fix on record
  • every version up to 1.11.0-alpha.0.0.20260225185322-738bad662b20: fixed in 1.11.0-alpha.0.0.20260225185322-738bad662b20
  • every version on: no fix on record
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 37× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 98 of 184 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 2 repeat rows among the latest 100 are merged into the row they repeat. The 86 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  2. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.1% · 1st percentile
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  4. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  5. 2026-10-25 14:33 UTCEG score recompute
  6. 2026-10-24 19:59 UTCEG score recompute
  7. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  8. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  9. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  10. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.2% · 10th percentile
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  14. 2026-10-18 03:45 UTCEG score recompute
  15. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  16. 2026-10-17 15:26 UTCEG score recompute
  17. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  18. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  19. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.2% · 10th percentile
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  22. 2026-10-12 16:12 UTCEG score recompute
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  25. 2026-10-11 14:34 UTCEG score recompute
Show 73 more
  1. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  2. 2026-10-11 00:22 UTCOSV refresh
  3. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 10th percentile
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  13. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  14. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  15. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 10th percentile
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  17. 2026-09-21 12:19 UTCOSV refresh
  18. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
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  34. 2026-09-02 09:44 UTCOSV refresh
  35. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
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  47. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  48. 2026-08-16 08:24 UTCEG score recompute
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  51. 2026-08-14 05:32 UTCEG score recompute
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  55. 2026-08-11 19:56 UTCEG score recompute
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  57. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  58. 2026-08-09 16:14 UTCEG score recompute
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  60. 2026-08-09 05:02 UTCEG score recompute
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  67. 2026-08-03 22:28 UTCEG score recompute
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  73. 2026-07-25 14:18 UTCEPSS rescoreEPSS 0.1% · 2nd percentile

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Go:antrea.io/antrea

Frequently asked(5)

What is CVE-2026-34992?
CVE-2026-34992 is a high-severity vulnerability; its CVE record was published on April 6, 2026. Antrea is a Kubernetes networking solution intended to be Kubernetes native. Prior to 2.4.5 and 2.5.2, a missing encryption vulnerability affects inter-Node Pod traffic. In Antrea clusters configured for dual-stack networking with IPsec encryption enabled (trafficEncryptionMode: ipsec), Antrea…
When was the CVE record for CVE-2026-34992 published?
The CVE record for CVE-2026-34992 was published on April 6, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of April 27, 2026; the record at its source may have been updated since.
Is CVE-2026-34992 actively exploited?
CVE-2026-34992 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-34992?
CVE-2026-34992 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-34992?
A fix for CVE-2026-34992 is available: update to the fixed version the vendor names in its advisory.

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