CVE-2026-65065

NONECVSS 0.0Trending — 5 sources updated this week
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 0%CVSS: —Exploit: NoneExposed: 0

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

Data::RoaringBitmap::Shared versions before 0.02 for Perl create a world-readable mmap backing file and open it without O_EXCL or O_NOFOLLOW.

The segment is created in roaring.h with open(path, O_RDWR|O_CREAT, 0666). The mode is 0666, so under the default umask 022 the file is created mode 0644 (world-readable). O_NOFOLLOW is absent, so a symlink planted at the path is followed, and O_EXCL is absent, so the open silently uses a pre-planted file instead of failing.

A "Shared" segment naturally lives in a shared directory such as /tmp or /dev/shm, where any local user can read the IPC payloads stored in the world-readable segment, and a pre-planted file or symlink at the path lets a local attacker win a pre-creation race or redirect the open.

CVSS v3
—
EG Score
0.0(none)
EG Risk
0
EG Risk 0/100

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. It is distinct from the 0–10 EG Score, which measures severity.

EPSS
5.7%
KEV
Not listed

Published

July 21, 2026

Last Modified

July 23, 2026

References (2)

Vendor Advisories for CVE-2026-65065(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 15× 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. 2026-07-23 16:11 UTCNVD update
  2. 2026-07-23 14:18 UTCEPSS rescore
  3. 2026-07-23 14:18 UTCEPSS rescore
  4. 2026-07-23 13:24 UTCMITRE cvelistV5
  5. 2026-07-23 03:22 UTCEG score recompute
  6. 2026-07-22 23:01 UTCEG score recompute
  7. 2026-07-22 23:00 UTCGHSA enrichment
  8. 2026-07-22 14:08 UTCEPSS rescore
  9. 2026-07-22 14:08 UTCEPSS rescore
  10. 2026-07-21 21:38 UTCGHSA enrichment
  11. 2026-07-21 21:36 UTCGHSA enrichment
  12. 2026-07-21 21:33 UTCGHSA enrichment
  13. 2026-07-21 21:19 UTCNVD update
  14. 2026-07-21 19:44 UTCEG score recompute
  15. 2026-07-21 19:43 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2026-65065?
CVE-2026-65065 is a none vulnerability published on July 21, 2026. Data::RoaringBitmap::Shared versions before 0.02 for Perl create a world-readable mmap backing file and open it without OEXCL or ONOFOLLOW. The segment is created in roaring.h with open(path, ORDWR|OCREAT, 0666). The mode is 0666, so under the default umask 022 the file is created mode 0644…
When was CVE-2026-65065 disclosed?
CVE-2026-65065 was first published in the National Vulnerability Database on July 21, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-65065 actively exploited?
CVE-2026-65065 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2026-65065?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-65065, 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-2026-65065

Explore →

Is Your Infrastructure Affected by CVE-2026-65065?

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

Start Free Scan →Browse All CVEs