CVE-2026-55290

LOWPre-NVD 3.33.3—
EchelonGraph scoreHIGH confidence

Score 3.3 from GitHub Security Advisory (severity: LOW) published 2026-09-08. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 3.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
3.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 3.3Exploit: None knownExposed: 0

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

In setTo of ResourceTypes.cpp, there is a possible out-of-bounds heap read due to a missing bounds check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.

CVSS v3
3.3
EG Score
3.3(high)
EG Risk
15(Track)
EG Risk 15/100SSVC: 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
Severity33% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
0%
KEV
Not listed

Published

September 8, 2026

Last Modified

September 24, 2026

References (1)

Vendor Advisories for CVE-2026-55290(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 10× in last 7d / 26× 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. 2026-09-24 19:36 UTCEG score recompute
  2. 2026-09-24 19:36 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-22 01:51 UTCEG score recompute
  6. 2026-09-22 01:51 UTCGHSA enrichment
  7. 2026-09-20 20:16 UTCEPSS rescore
  8. 2026-09-19 05:29 UTCEG score recompute
  9. 2026-09-19 05:29 UTCGHSA enrichment
  10. 2026-09-18 19:28 UTCEPSS rescore
  11. 2026-09-17 19:31 UTCEPSS rescore
  12. 2026-09-16 14:08 UTCEPSS rescore
  13. 2026-09-16 09:06 UTCEG score recompute
  14. 2026-09-16 09:06 UTCGHSA enrichment
  15. 2026-09-13 16:47 UTCEPSS rescore
  16. 2026-09-13 12:45 UTCEG score recompute
  17. 2026-09-13 12:45 UTCGHSA enrichment
  18. 2026-09-11 14:53 UTCEPSS rescore
  19. 2026-09-10 16:23 UTCGHSA enrichment
  20. 2026-09-10 15:45 UTCEG score recompute▲ 3.30
  21. 2026-09-10 15:45 UTCGHSA enrichment
  22. 2026-09-10 15:44 UTCMITRE cvelistV5CVSS v3 → 3.3 · severity → LOW
  23. 2026-09-10 09:35 UTCEPSS rescore
  24. 2026-09-08 19:30 UTCNVD update
  25. 2026-09-08 18:31 UTCEG score recompute
Show 1 more
  1. 2026-09-08 18:29 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-55290?
CVE-2026-55290 is a low vulnerability published on September 8, 2026. In setTo of ResourceTypes.cpp, there is a possible out-of-bounds heap read due to a missing bounds check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.
When was CVE-2026-55290 disclosed?
CVE-2026-55290 was first published in the National Vulnerability Database on September 8, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55290 actively exploited?
CVE-2026-55290 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 99.6% of all scored CVEs.
What is the CVSS score of CVE-2026-55290?
CVE-2026-55290 has a CVSS v3.1 base score of 3.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-55290?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55290, 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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