CVE-2026-53613

HIGHPre-NVD 7.07.0
EchelonGraph scoreLOW confidence

This high-severity CVE scores 7.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1% (2nd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: a secondary CVSS source
Trending — 4 sources updated this week
7.0EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 7.0Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

util-linux is a random collection of Linux utilities. In util-linux 2.17 through 2.41.6 and 2.42 through 2.42.3, and in 2.42.4 when the legacy mount(2) path is used without /proc, restricted non-root mount requests validate an /etc/fstab target before the mount operation re-resolves that pathname. A local low-privileged user authorized by an fstab user or users entry whose target has an attacker-writable ancestor can use renameat2(RENAME_EXCHANGE) to swap a path component and redirect an authorized mount to a root-owned location, such as mounting attacker-controlled content over /etc/sudoers.d, and thereby gain root privileges. Versions 2.41.5 and 2.42.2 pin targets for the new mount API, and 2.42.4 pins legacy targets through /proc/self/fd; the documented legacy fallback without /proc remains affected.

CVSS v3
7.0
EG Score
7.0HIGHlow confidence
EG Risk
32
EG Risk 32/100

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. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity70% × 45%
The EG Score, 7.0 of 10.
Exploitation0% × 40%
No KEV listing, EG-KEV tier or EPSS when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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 available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
2nd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (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

October 14, 2026

Last Modified

October 15, 2026

Advisory Details (10)

Auto-updated Oct 14, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
GitHub commit

commit 85d16b341f72 (util-linux/util-linux)

Fix landed in util-linux/util-linux commit 85d16b341f72 — awaiting tagged release

https://github.com/util-linux/util-linux/commit/85d16b341f7232c9dbb4884b632e1e956584bee9
GitHub commit

commit 78a860982e03 (util-linux/util-linux)

Fix landed in util-linux/util-linux commit 78a860982e03 — awaiting tagged release

https://github.com/util-linux/util-linux/commit/78a860982e036f38fe9c0b3344998df5ac2c2ff5
GitHub commit

commit 708d1b3c5193 (util-linux/util-linux)

Fix landed in util-linux/util-linux commit 708d1b3c5193 — awaiting tagged release

https://github.com/util-linux/util-linux/commit/708d1b3c51932dc5ba8082c7368187715e6a8d78
GitHub commit

commit 646fb66603d1 (util-linux/util-linux)

Fix landed in util-linux/util-linux commit 646fb66603d1 — awaiting tagged release

https://github.com/util-linux/util-linux/commit/646fb66603d10a7ac337e14f566f1af48e3107c9
GitHub commit

commit 472cc3fb2d4d (util-linux/util-linux)

Fix landed in util-linux/util-linux commit 472cc3fb2d4d — awaiting tagged release

https://github.com/util-linux/util-linux/commit/472cc3fb2d4d47cca7aab2e0b59eb3fb8a9359ec
GitHub commit

commit 39fef62bf322 (util-linux/util-linux)

Fix landed in util-linux/util-linux commit 39fef62bf322 — awaiting tagged release

https://github.com/util-linux/util-linux/commit/39fef62bf3226abb6bb018fa8750afa0327e84b4
GitHub commit

commit 2c773f336134 (util-linux/util-linux)

Fix landed in util-linux/util-linux commit 2c773f336134 — awaiting tagged release

https://github.com/util-linux/util-linux/commit/2c773f336134acf016e639abb6f12ba7341fe4b8
GitHub commit

commit 0d3d55975aa3 (util-linux/util-linux)

Fix landed in util-linux/util-linux commit 0d3d55975aa3 — awaiting tagged release

https://github.com/util-linux/util-linux/commit/0d3d55975aa3492c62fd345eac38f41cd166c0b0
GitHub commit

commit 0b010025a0e4 (util-linux/util-linux)

Fix landed in util-linux/util-linux commit 0b010025a0e4 — awaiting tagged release

https://github.com/util-linux/util-linux/commit/0b010025a0e429bc80355c94db86a843395d49e2
GitHub advisoryMentions a patch (unverified)🟡 PoC Available

Local Privilege Escalation via TOCTOU in mount(8) — Target Path Redirection · Advisory · util-linux/util-linux · GitHub

https://github.com/util-linux/util-linux/security/advisories/GHSA-8gj5-72r3-428g

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuuuid-runtime (2.37.2-4ubuntu3.6) @ jammy2026-10-15ubuntu

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 10× in last 7d / 10× 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.

  1. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  2. 2026-10-15 16:30 UTCEG score recompute
  3. 2026-10-15 16:30 UTCVendor advisory
  4. 2026-10-15 15:23 UTCEG score recompute
  5. 2026-10-15 15:23 UTCVendor advisory
  6. 2026-10-14 15:31 UTCEG score recompute
  7. 2026-10-14 15:31 UTCVendor advisory
  8. 2026-10-14 15:01 UTCEG score recomputeFirst assessed: 7.0 HIGH
  9. 2026-10-14 15:01 UTCVendor advisory
  10. 2026-10-14 14:59 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-53613?
CVE-2026-53613 is a high-severity vulnerability; its CVE record was published on October 14, 2026. util-linux is a random collection of Linux utilities. In util-linux 2.17 through 2.41.6 and 2.42 through 2.42.3, and in 2.42.4 when the legacy mount(2) path is used without /proc, restricted non-root mount requests validate an /etc/fstab target before the mount operation re-resolves that pathname.…
When was the CVE record for CVE-2026-53613 published?
The CVE record for CVE-2026-53613 was published on October 14, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 15, 2026; the record at its source may have been updated since.
Is CVE-2026-53613 actively exploited?
CVE-2026-53613 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (2nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-53613?
CVE-2026-53613 has a CVSS base score of 7.0 (a secondary CVSS source that NVD displays; NVD's own analysis pending). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-53613?
A fix for CVE-2026-53613 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-53613

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