Velociraptor's prefetch library contains an out of bound vulnerability which may cause a crash when parsing certain malformed prefetch files.
CVE-2026-77797
LOWPre-NVD 3.63.6—Trending — 3 sources updated this week
EchelonGraph scoreHIGH confidence
Score 3.6 from GitHub Security Advisory (severity: LOW) published 2026-09-24. a secondary CVSS source baseline 3.6; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: ghsa, secondary
3.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 3.6Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 3.6
- EG Score
- 3.6(high)
- EG Risk
- 21(Track)EG Risk 21/100SSVC: 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 computedSeverity36% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- —
- EPSS %ILE
- —
- KEV
- Not listed
Published
September 24, 2026
Last Modified
September 24, 2026
References (2)
Vendor Advisories for CVE-2026-77797(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 5× in last 7d / 5× 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.
- 2026-09-24 21:01 UTCEG score recompute
- 2026-09-24 21:01 UTCGHSA enrichment
- 2026-09-24 14:33 UTCEG score recompute
- 2026-09-24 13:54 UTCEG score recompute
- 2026-09-24 13:53 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(4)
What is CVE-2026-77797?
CVE-2026-77797 is a low vulnerability published on September 24, 2026. Velociraptor's prefetch library contains an out of bound vulnerability which may cause a crash when parsing certain malformed prefetch files.
When was CVE-2026-77797 disclosed?
CVE-2026-77797 was first published in the National Vulnerability Database on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-77797?
CVE-2026-77797 has a CVSS v3 base score of 3.6 (NVD).
How do I remediate CVE-2026-77797?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-77797, 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-2026-77797
Is Your Infrastructure Affected by CVE-2026-77797?
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