CVE-2026-53706

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 78% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

PREVAIL is a Polynomial-Runtime EBPF Verifier using an Abstract Interpretation Layer. Prior to version 0.2.4, the prevail eBPF verifier accepts ALU32 ADD and SUB instructions that operate on pointer-typed registers without checking the is64 flag. Because ALU32 arithmetic zero-extends the 32-bit result, the upper half of any pointer is silently destroyed at runtime, yet prevail marks the program as verified safe. Any caller that can submit an eBPF program for verification — including unprivileged users on kernels that permit BPF program loading — can produce a program that passes verification but faults or misbehaves at runtime. This issue has been patched in version 0.2.4.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
55(Track)
EG Risk 55/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

September 2, 2026

Last Modified

September 9, 2026

Advisory Details (3)

Auto-updated Sep 2, 2026
🔬 Proof of concept available. Patch available. Sources: github_release, github, github_commit.
github_release Patch Available

v0.2.4

Patch available: vbpf/prevail v0.2.4

https://github.com/vbpf/prevail/releases/tag/v0.2.4
github_commit Patch Available

commit d3fab8c23a93 (vbpf/prevail)

Patch available: vbpf/prevail v0.2.4 (contains commit d3fab8c23a93)

https://github.com/vbpf/prevail/commit/d3fab8c23a93d9a615bc741b254ab26391559e0f
github Patch Available🟡 PoC Available

ALU32 pointer arithmetic accepted without is64 gate — verifier emits false PASS for pointer-corrupting programs · Advisory · vbpf/prevail · GitHub

https://github.com/vbpf/prevail/security/advisories/GHSA-65fp-5qmq-gg2m

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 28× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

  1. 2026-09-18 22:59 UTCEG score recompute
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-17 22:13 UTCEG score recompute
  4. 2026-09-16 21:33 UTCEG score recompute
  5. 2026-09-16 14:08 UTCEPSS rescore
  6. 2026-09-16 09:13 UTCEG score recompute
  7. 2026-09-16 05:15 UTCEPSS rescore
  8. 2026-09-15 08:33 UTCEG score recompute
  9. 2026-09-13 19:34 UTCEG score recompute
  10. 2026-09-13 16:47 UTCEPSS rescore
  11. 2026-09-12 18:55 UTCEG score recompute
  12. 2026-09-11 18:14 UTCEG score recompute
  13. 2026-09-10 17:34 UTCEG score recompute
  14. 2026-09-10 09:35 UTCEPSS rescore
  15. 2026-09-08 23:11 UTCEG score recompute
  16. 2026-09-08 22:01 UTCEPSS rescore
  17. 2026-09-07 18:12 UTCEG score recompute
  18. 2026-09-07 16:01 UTCEPSS rescore
  19. 2026-09-06 17:33 UTCEG score recompute
  20. 2026-09-06 13:47 UTCEPSS rescore
  21. 2026-09-05 16:53 UTCEG score recompute
  22. 2026-09-04 16:12 UTCEG score recompute
  23. 2026-09-04 05:06 UTCEPSS rescore
  24. 2026-09-03 15:31 UTCEG score recompute
  25. 2026-09-03 14:35 UTCEG score recompute
Show 3 more
  1. 2026-09-02 18:36 UTCEG score recompute
  2. 2026-09-02 18:03 UTCEG score recompute
  3. 2026-09-02 18:01 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-53706?
CVE-2026-53706 is a high vulnerability published on September 2, 2026. PREVAIL is a Polynomial-Runtime EBPF Verifier using an Abstract Interpretation Layer. Prior to version 0.2.4, the prevail eBPF verifier accepts ALU32 ADD and SUB instructions that operate on pointer-typed registers without checking the is64 flag. Because ALU32 arithmetic zero-extends the 32-bit…
When was CVE-2026-53706 disclosed?
CVE-2026-53706 was first published in the National Vulnerability Database on September 2, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53706 actively exploited?
CVE-2026-53706 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 78.0% of all scored CVEs.
What is the CVSS score of CVE-2026-53706?
CVE-2026-53706 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-53706?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53706, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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