CVE-2018-16872

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2022-05-13. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 5.3Exploit: NoneExposed: 0

A fix is available — apply it.

A flaw was found in qemu Media Transfer Protocol (MTP). The code opening files in usb_mtp_get_object and usb_mtp_get_partial_object and directories in usb_mtp_object_readdir doesn't consider that the underlying filesystem may have changed since the time lstat(2) was called in usb_mtp_object_alloc, a classical TOCTTOU problem. An attacker with write access to the host filesystem shared with a guest can use this property to navigate the host filesystem in the context of the QEMU process and read any file the QEMU process has access to. Access to the filesystem may be local or via a network share protocol such as CIFS.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity53% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
61.5%
KEV
Not listed

Published

December 13, 2018

Last Modified

November 21, 2024

References (18)

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuqemu-utils (1:2.11+dfsg-1ubuntu7.12) @ bionic2026-05-28ubuntu

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

(1)

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 12× in last 7d / 42× 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 01:34 UTCEG score recompute
  2. 2026-07-22 22:14 UTCEG score recompute
  3. 2026-07-22 14:04 UTCEPSS rescore
  4. 2026-07-21 15:21 UTCEPSS rescore
  5. 2026-07-21 01:17 UTCOSV refresh
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  1. 2026-07-05 02:27 UTCEPSS rescore
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  3. 2026-07-03 20:56 UTCOSV refresh
  4. 2026-07-02 16:54 UTCEPSS rescore
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  31. 2026-06-15 08:43 UTCOSV refresh
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  62. 2026-05-28 00:18 UTCEG score recompute
  63. 2026-05-28 00:18 UTCVendor advisory
  64. 2026-05-28 00:18 UTCGHSA enrichment
  65. 2026-05-27 13:38 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2018-16872?
CVE-2018-16872 is a medium vulnerability published on December 13, 2018. A flaw was found in qemu Media Transfer Protocol (MTP). The code opening files in usbmtpgetobject and usbmtpgetpartialobject and directories in usbmtpobjectreaddir doesn't consider that the underlying filesystem may have changed since the time lstat(2) was called in usbmtpobject_alloc, a classical…
When was CVE-2018-16872 disclosed?
CVE-2018-16872 was first published in the National Vulnerability Database on December 13, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-16872 actively exploited?
CVE-2018-16872 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 61.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-16872?
CVE-2018-16872 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2018-16872?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-16872, 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.

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