CVE-2026-95619

HIGHPre-NVD 7.77.7—
EchelonGraph scoreHIGH confidence

Score 7.7 from GitHub Security Advisory (severity: HIGH) published 2026-09-22. a secondary CVSS source baseline 7.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
7.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.7Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in libstdc++. An integer overflow can occur when processing large inputs to the aligned operator new in the C++ library. This vulnerability could lead to an undersized memory allocation, potentially causing memory corruption or application instability.

CVSS v3
7.7
EG Score
7.7(high)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity77% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
27%
KEV
Not listed

Published

September 22, 2026

Last Modified

September 22, 2026

Advisory Details (2)

Auto-updated Sep 22, 2026
Patch available. Sources: redhat.
redhat

2537811 – (CVE-2026-95619) CVE-2026-95619 gcc: libstd++: libstdc++ integer overflow in `new` operator

https://bugzilla.redhat.com/show_bug.cgi?id=2537811
redhat Patch Available

CVE-2026-95619 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 and 9. An integer overflow in the

https://access.redhat.com/security/cve/CVE-2026-95619

Vendor Advisories for CVE-2026-95619(1)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatgcc13-main-13.5.0-0.1.hum12026-09-14redhat
redhatgcc-main-16.2.1-2.hum12026-08-22redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 29× in last 7d / 29× 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. 2026-09-25 08:20 UTCVendor advisory
  2. 2026-09-25 08:20 UTCGHSA enrichment
  3. 2026-09-24 20:13 UTCEG score recompute
  4. 2026-09-24 20:13 UTCVendor advisory
  5. 2026-09-24 20:13 UTCGHSA enrichment
  6. 2026-09-24 14:04 UTCEPSS rescore
  7. 2026-09-24 08:08 UTCVendor advisory
  8. 2026-09-24 08:08 UTCGHSA enrichment
  9. 2026-09-23 20:02 UTCEG score recompute
  10. 2026-09-23 20:02 UTCVendor advisory
  11. 2026-09-23 20:02 UTCGHSA enrichment
  12. 2026-09-23 17:54 UTCEPSS rescore
  13. 2026-09-23 07:57 UTCVendor advisory
  14. 2026-09-23 07:57 UTCGHSA enrichment
  15. 2026-09-22 19:52 UTCGHSA enrichment
  16. 2026-09-22 18:33 UTCEG score recompute
  17. 2026-09-22 18:33 UTCGHSA enrichment
  18. 2026-09-22 18:08 UTCGHSA enrichment
  19. 2026-09-22 17:53 UTCEG score recompute
  20. 2026-09-22 17:53 UTCGHSA enrichment
  21. 2026-09-22 17:37 UTCEG score recompute
  22. 2026-09-22 17:36 UTCGHSA enrichment
  23. 2026-09-22 17:10 UTCEG score recompute
  24. 2026-09-22 17:10 UTCGHSA enrichment
  25. 2026-09-22 14:19 UTCEG score recompute
Show 4 more
  1. 2026-09-22 14:06 UTCEG score recompute
  2. 2026-09-22 13:18 UTCEG score recompute
  3. 2026-09-22 12:56 UTCEG score recompute
  4. 2026-09-22 12:55 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-95619?
CVE-2026-95619 is a high vulnerability published on September 22, 2026. A flaw was found in libstdc++. An integer overflow can occur when processing large inputs to the aligned operator new in the C++ library. This vulnerability could lead to an undersized memory allocation, potentially causing memory corruption or application instability.
When was CVE-2026-95619 disclosed?
CVE-2026-95619 was first published in the National Vulnerability Database on September 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-95619 actively exploited?
CVE-2026-95619 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 72.6% of all scored CVEs.
What is the CVSS score of CVE-2026-95619?
CVE-2026-95619 has a CVSS v3 base score of 7.7 (NVD).
How do I remediate CVE-2026-95619?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-95619, 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

Explore the affected products and dependency analysis for CVE-2026-95619

Explore →

Is Your Infrastructure Affected by CVE-2026-95619?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs