Ollama (HEAD f0078ae) contains an uncontrolled memory allocation vulnerability in the GGUF metadata parser that allows remote attackers to crash the server by supplying a crafted GGUF file with attacker-controlled length and count fields in string lengths, tensor dimension counts, and metadata array counts that are used as allocation sizes without validation against remaining file size. Attackers can upload a sub-1KB crafted GGUF file via the blob upload and model create or pull API endpoints to trigger unrecoverable Go runtime out-of-memory fatal errors or makeslice panics that bypass recovery middleware and crash the entire server process.
CVE-2026-65315
“—” beside the score: it is equal to the CVSS score beside it.
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-22. A secondary CVSS source baseline 7.5; sources differ by 0.0.
Also known asEUVD-2026-46642 (ENISA EUVD) · GHSA-9hhj-2jwx-r87p (GitHub Security Advisories)Source: ENISA EUVD
- High severity, but no confirmed exploitation yet
A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).
- CVSS v3
- 7.5
- EG Score
- 7.5HIGHmedium confidence
- EG Risk
- 49EG Risk 49/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity75% × 45%Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation0.8% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability100% × 15%CISA's SSVC Automatable value: yes (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines at low or medium mission impact and sooner than that at high; until then, restrict network exposure of the affected system or apply the vendor's mitigation. - EPSS PROB
- 0.8%
- EPSS %ILE
- 56th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.
- EG Severity
- 7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 0.8% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).
A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines at low or medium mission impact and sooner than that at high; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.
In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
July 21, 2026
Last Modified
October 24, 2026
Advisory Details (3)
Auto-updated Jul 22, 2026Ollama Remote Denial of Service via Attacker-Controlled Allocation in GGUF Metadata Parser | Advisories | VulnCheck
https://www.vulncheck.com/advisories/ollama-remote-denial-of-service-via-attacker-controlled-allocation-in-gguf-metadata-parserGitHub - ollama/ollama: Get up and running with Kimi-K2.6, GLM-5.2, MiniMax, DeepSeek, gpt-oss, Qwen, Gemma and other models. · GitHub
https://github.com/ollama/ollamaUnbounded / attacker-controlled memory allocation in the GGUF metadata parser → remote denial of service (unrecoverable server crash) from a tiny crafted model file · Issue #17042 · ollama/ollama · GitHub
https://github.com/ollama/ollama/issues/17042Vendor Advisories for CVE-2026-65315(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 12× in last 7d / 47× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 100 of 260 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 160 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.8% · 56th percentile
- 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.8% · 56th percentile
- 2026-10-27 21:05 UTCEG score recompute
- 2026-10-27 21:05 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.8% · 56th percentile
- 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.8% · 56th percentile
- 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.8% · 56th percentile
- 2026-10-25 14:12 UTCEG score recompute
- 2026-10-24 17:26 UTCEG score recompute
- 2026-10-24 17:26 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.8% · 56th percentile
- 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.8% · 56th percentile
- 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.8% · 56th percentile
- 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.8% · 56th percentile
- 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.8% · 56th percentile
- 2026-10-20 09:11 UTCEG score recompute
- 2026-10-20 09:10 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.8% · 56th percentile
- 2026-10-18 03:21 UTCEG score recompute
- 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.8% · 56th percentile
- 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.8% · 56th percentile
- 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-10-13 11:17 UTCEG score recompute
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- 2026-10-13 11:16 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-10-12 15:47 UTCEG score recompute
- 2026-10-11 19:32 UTCEG score recompute
- 2026-10-11 16:47 UTCEG score recompute
- 2026-10-11 14:08 UTCEG score recompute
- 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-10-04 14:46 UTCEG score recompute
- 2026-10-04 14:46 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-10-01 07:25 UTCEG score recompute
- 2026-10-01 07:25 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-09-28 06:03 UTCEG score recompute
- 2026-09-28 06:03 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-09-24 15:01 UTCEG score recompute
- 2026-09-24 15:01 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-24 03:20 UTCEG score recompute
- 2026-09-24 03:20 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-09-23 01:22 UTCEG score recompute
- 2026-09-23 01:22 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-09-20 05:54 UTCEG score recompute
- 2026-09-20 05:54 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-19 00:19 UTCEG score recompute
- 2026-09-19 00:19 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-09-18 03:46 UTCEG score recompute
- 2026-09-18 03:46 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-17 05:04 UTCEG score recompute
- 2026-09-17 05:04 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-09-16 12:35 UTCEG score recompute
- 2026-09-16 12:35 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-09-14 10:19 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-13 22:38 UTCEG score recompute
- 2026-09-13 22:38 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-13 08:17 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-12 21:12 UTCEG score recompute
- 2026-09-12 21:12 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-12 09:44 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-11 20:31 UTCEG score recompute
- 2026-09-11 20:31 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-09-11 08:53 UTCEG score recompute
- 2026-09-11 08:53 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-09 11:11 UTCEG score recompute
- 2026-09-09 11:11 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-09-07 22:28 UTCEG score recompute
- 2026-09-07 22:28 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-09-06 10:39 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-05 19:50 UTCEG score recompute
- 2026-09-05 19:50 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-09-05 08:26 UTCEG score recompute
- 2026-09-05 08:26 UTCGHSA enrichmentGHSA-9hhj-2jwx-r87p · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.8% · 54th percentile
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Frequently asked(5)
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Dependency Blast Radius
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