CVE-2026-67198

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-04. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

Perspective 5.0.0 contains a denial-of-service vulnerability in the VirtualServer protocol dispatcher that allows unauthenticated remote attackers to crash the server process by sending malformed or incomplete protobuf messages. Attackers can send well-formed requests such as ViewToArrowReq with no viewport set or MakeTableReq with no data field to trigger unwrap() calls on None values at nine distinct sites, causing the process to abort with SIGABRT.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
10%
KEV
Not listed

Published

August 4, 2026

Last Modified

August 4, 2026

Advisory Details (2)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

Perspective 5.0.0 DoS via VirtualServer Protocol Dispatcher | Advisories | VulnCheck

https://www.vulncheck.com/advisories/perspective-dos-via-virtualserver-protocol-dispatcher
generic

From One Row of Data to a Root Shell: Five CVEs in Perspective 5.0.0 | Security Research

https://christbowel.com/blog/perspective-5-0-0-five-cves/

Vendor Advisories for CVE-2026-67198(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 26× in last 7d / 66× 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. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 20:33 UTCGHSA enrichment
  3. 2026-08-20 07:44 UTCGHSA enrichment
  4. 2026-08-19 18:56 UTCEG score recompute
  5. 2026-08-19 18:56 UTCGHSA enrichment
  6. 2026-08-19 17:04 UTCEPSS rescore
  7. 2026-08-19 04:37 UTCGHSA enrichment
  8. 2026-08-18 15:48 UTCEG score recompute
  9. 2026-08-18 15:48 UTCGHSA enrichment
  10. 2026-08-18 13:48 UTCEPSS rescore
  11. 2026-08-18 01:32 UTCEG score recompute
  12. 2026-08-18 01:32 UTCGHSA enrichment
  13. 2026-08-17 13:47 UTCEPSS rescore
  14. 2026-08-17 12:44 UTCGHSA enrichment
  15. 2026-08-16 23:56 UTCEG score recompute
  16. 2026-08-16 23:56 UTCGHSA enrichment
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-16 11:08 UTCEG score recompute
  19. 2026-08-16 11:08 UTCGHSA enrichment
  20. 2026-08-15 22:20 UTCGHSA enrichment
  21. 2026-08-15 09:32 UTCEG score recompute
  22. 2026-08-15 09:32 UTCGHSA enrichment
  23. 2026-08-15 01:30 UTCEPSS rescore
  24. 2026-08-14 20:43 UTCGHSA enrichment
  25. 2026-08-14 07:55 UTCEG score recompute
Show 41 more
  1. 2026-08-14 07:55 UTCGHSA enrichment
  2. 2026-08-13 22:00 UTCEPSS rescore
  3. 2026-08-13 19:06 UTCGHSA enrichment
  4. 2026-08-13 06:18 UTCGHSA enrichment
  5. 2026-08-12 17:29 UTCEG score recompute
  6. 2026-08-12 17:29 UTCGHSA enrichment
  7. 2026-08-12 13:51 UTCEPSS rescore
  8. 2026-08-12 04:41 UTCGHSA enrichment
  9. 2026-08-11 15:52 UTCEG score recompute
  10. 2026-08-11 15:52 UTCGHSA enrichment
  11. 2026-08-11 03:04 UTCEG score recompute
  12. 2026-08-11 03:04 UTCGHSA enrichment
  13. 2026-08-11 00:00 UTCEPSS rescore
  14. 2026-08-10 14:16 UTCGHSA enrichment
  15. 2026-08-10 01:27 UTCEG score recompute
  16. 2026-08-10 01:27 UTCGHSA enrichment
  17. 2026-08-09 13:47 UTCEPSS rescore
  18. 2026-08-09 12:39 UTCGHSA enrichment
  19. 2026-08-08 23:51 UTCEG score recompute
  20. 2026-08-08 23:51 UTCGHSA enrichment
  21. 2026-08-08 16:37 UTCEPSS rescore
  22. 2026-08-08 11:03 UTCGHSA enrichment
  23. 2026-08-07 22:14 UTCEG score recompute
  24. 2026-08-07 22:14 UTCGHSA enrichment
  25. 2026-08-07 09:26 UTCGHSA enrichment
  26. 2026-08-06 20:38 UTCEG score recompute
  27. 2026-08-06 20:38 UTCGHSA enrichment
  28. 2026-08-06 13:47 UTCEPSS rescore
  29. 2026-08-06 07:49 UTCEG score recompute
  30. 2026-08-06 07:49 UTCGHSA enrichment
  31. 2026-08-05 19:17 UTCEPSS rescore
  32. 2026-08-05 19:17 UTCEPSS rescore
  33. 2026-08-05 19:01 UTCGHSA enrichment
  34. 2026-08-05 06:12 UTCGHSA enrichment
  35. 2026-08-04 17:24 UTCEG score recompute
  36. 2026-08-04 17:24 UTCGHSA enrichment
  37. 2026-08-04 16:28 UTCEG score recompute
  38. 2026-08-04 16:28 UTCGHSA enrichment
  39. 2026-08-04 15:20 UTCEG score recompute
  40. 2026-08-04 14:48 UTCEG score recompute
  41. 2026-08-04 14:47 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-67198?
CVE-2026-67198 is a high vulnerability published on August 4, 2026. Perspective 5.0.0 contains a denial-of-service vulnerability in the VirtualServer protocol dispatcher that allows unauthenticated remote attackers to crash the server process by sending malformed or incomplete protobuf messages. Attackers can send well-formed requests such as ViewToArrowReq with no…
When was CVE-2026-67198 disclosed?
CVE-2026-67198 was first published in the National Vulnerability Database on August 4, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-67198 actively exploited?
CVE-2026-67198 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 89.7% of all scored CVEs.
What is the CVSS score of CVE-2026-67198?
CVE-2026-67198 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-67198?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-67198, 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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