CVE-2026-13595

MEDIUMNVD 5.36.8
EchelonGraph scoreMEDIUM confidence

“▲” beside the score: it is higher than NVD's CVSS score.

Score 6.8 from GitHub Security Advisory (severity: MODERATE) published 2026-06-29. NVD baseline CVSS 5.3; sources differ by 1.5.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — Patch released this week

Also known asEUVD-2026-40053 (ENISA EUVD) · GHSA-qpmf-9p9c-455w (GitHub Security Advisories)Source: ENISA EUVD

6.8EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 5.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in the libblkid library of util-linux. During nested partition probing, the BSD, Minix, Solaris x86, and UnixWare partition probers cache a raw pointer to a parent partition entry in a dynamically allocated array. When subsequent partition additions cause the array to be reallocated, this pointer becomes stale, leading to a heap use-after-free read. An attacker who can present a crafted block device image (for example, via USB insertion or a loop-mounted disk image) can trigger this flaw without user interaction, as libblkid is invoked automatically by udev/udisks as root on block-device hot-plug events. This could lead to limited information disclosure or denial of service.

CVSS v3
5.3
EG Score
6.8MEDIUMmedium confidence
EG Risk
31
EG Risk 31/100

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)
Severity68% × 45%
Impact severity (EG Severity): CVSS 6.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (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 available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
3rd
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 (6.8): severity, escalated by confirmed exploitation. This CVE's 6.8 is its impact severity (EG Severity), not escalated.

EG Severity
6.8 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-11). 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 every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

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

Exploitation none (CISA Vulnrichment) · Automatable no (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)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (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

June 29, 2026

Last Modified

November 12, 2026

Advisory Details (3)

Auto-updated Jun 29, 2026
Patch available. Sources: redhat, github_commit.
GitHub commit

commit c0186f14fbdb (util-linux/util-linux)

Fix landed in util-linux/util-linux commit c0186f14fbdb — awaiting tagged release

https://github.com/util-linux/util-linux/commit/c0186f14fbdb02f64c8e0ba701ce727ea764ff4c
Red Hat

2494101 – (CVE-2026-13595) CVE-2026-13595 util-linux: util-linux: heap use-after-free in libblkid nested partition probing

https://bugzilla.redhat.com/show_bug.cgi?id=2494101
Red HatMentions a patch (unverified)

cve-details

https://access.redhat.com/security/cve/CVE-2026-13595

Patch Availability(6)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuuuid-runtime (2.37.2-4ubuntu3.6) @ jammy2026-11-12ubuntu
redhatutil-linux-0:2.37.4-28.el9_92026-11-10redhat
redhatutil-linux-0:2.32.1-50.el8_102026-11-09redhat
redhatcostmanagement/costmanagement-ui-rhel10:17938253182026-11-04redhat
redhatutil-linux-0:2.40.2-18.el10_2.202026-11-02redhat
redhatutil-linux-main-2.42.2-1.hum12026-06-17redhat

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.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
util-linux2.36.1-8 ... 2.42~rc2-1 (140 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
util-linux2.38.1-5 ... 2.42~rc2-1 (120 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
util-linux2.41-5 ... 2.41.3-4 (13 versions)
  • every version up to 2.41.5-0+deb13u1: fixed in 2.41.5-0+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
util-linux2.41-5 ... 2.42~rc2-1 (29 versions)
  • every version up to 2.42.2-1: fixed in 2.42.2-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(2)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 23× in last 7d / 59× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 300 rows 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 200 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-12 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  2. 2026-11-12 11:28 UTCVendor advisory
  3. 2026-11-12 11:28 UTCGHSA enrichmentGHSA-qpmf-9p9c-455w · GitHub severity MODERATE · GitHub CVSS 6.8
  4. 2026-11-12 10:53 UTCEchelonGraph re-scored
  5. 2026-11-12 10:53 UTCVendor advisory
  6. 2026-11-12 10:53 UTCGHSA enrichmentGHSA-qpmf-9p9c-455w · GitHub severity MODERATE · GitHub CVSS 6.8
  7. 2026-11-11 16:38 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  8. 2026-11-10 20:35 UTCVendor advisory
  9. 2026-11-10 20:35 UTCGHSA enrichmentGHSA-qpmf-9p9c-455w · GitHub severity MODERATE · GitHub CVSS 6.8
  10. 2026-11-10 20:07 UTCEchelonGraph re-scored
  11. 2026-11-10 20:07 UTCVendor advisory
  12. 2026-11-10 20:07 UTCGHSA enrichmentGHSA-qpmf-9p9c-455w · GitHub severity MODERATE · GitHub CVSS 6.8
  13. 2026-11-10 16:42 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  14. 2026-11-09 16:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  15. 2026-11-09 11:27 UTCVendor advisory
  16. 2026-11-09 11:27 UTCGHSA enrichmentGHSA-qpmf-9p9c-455w · GitHub severity MODERATE · GitHub CVSS 6.8
  17. 2026-11-09 10:26 UTCEchelonGraph re-scored
  18. 2026-11-09 10:26 UTCVendor advisory
  19. 2026-11-09 10:26 UTCGHSA enrichmentGHSA-qpmf-9p9c-455w · GitHub severity MODERATE · GitHub CVSS 6.8
  20. 2026-11-08 16:38 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  21. 2026-11-07 16:38 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  22. 2026-11-06 16:36 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  23. 2026-11-06 08:27 UTCVendor advisory
  24. 2026-11-06 08:27 UTCGHSA enrichmentGHSA-qpmf-9p9c-455w · GitHub severity MODERATE · GitHub CVSS 6.8
  25. 2026-11-06 07:43 UTCVendor advisory
Show 75 more
  1. 2026-11-06 07:43 UTCGHSA enrichmentGHSA-qpmf-9p9c-455w · GitHub severity MODERATE · GitHub CVSS 6.8
  2. 2026-11-05 17:28 UTCVendor advisory
  3. 2026-11-05 17:28 UTCGHSA enrichmentGHSA-qpmf-9p9c-455w · GitHub severity MODERATE · GitHub CVSS 6.8
  4. 2026-11-05 17:09 UTCEchelonGraph re-scored
  5. 2026-11-05 17:09 UTCVendor advisory
  6. 2026-11-05 17:09 UTCGHSA enrichmentGHSA-qpmf-9p9c-455w · GitHub severity MODERATE · GitHub CVSS 6.8
  7. 2026-11-05 16:36 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  8. 2026-11-04 16:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  9. 2026-11-03 16:47 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  10. 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  11. 2026-11-02 06:26 UTCVendor advisory
  12. 2026-11-02 06:26 UTCGHSA enrichmentGHSA-qpmf-9p9c-455w · GitHub severity MODERATE · GitHub CVSS 6.8
  13. 2026-11-02 05:43 UTCEchelonGraph re-scored
  14. 2026-11-02 05:43 UTCVendor advisory
  15. 2026-11-02 05:43 UTCGHSA enrichmentGHSA-qpmf-9p9c-455w · GitHub severity MODERATE · GitHub CVSS 6.8
  16. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  17. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  18. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  19. 2026-10-30 14:26 UTCVendor advisory
  20. 2026-10-30 14:26 UTCGHSA enrichmentGHSA-qpmf-9p9c-455w · GitHub CVSS 6.8
  21. 2026-10-30 14:00 UTCEchelonGraph re-scored
  22. 2026-10-30 14:00 UTCVendor advisory
  23. 2026-10-30 14:00 UTCGHSA enrichmentGHSA-qpmf-9p9c-455w · GitHub CVSS 6.8
  24. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  25. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  26. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  27. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  28. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  29. 2026-10-25 14:48 UTCEchelonGraph re-scored
  30. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  31. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  32. 2026-10-23 06:48 UTCEchelonGraph re-scored
  33. 2026-10-23 06:48 UTCVendor advisory
  34. 2026-10-23 06:48 UTCGHSA enrichmentGHSA-qpmf-9p9c-455w · GitHub CVSS 6.8
  35. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  36. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  37. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  38. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  39. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  40. 2026-10-18 05:03 UTCEchelonGraph re-scored
  41. 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  42. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  43. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  44. 2026-10-13 18:54 UTCOSV refresh
  45. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  46. 2026-10-12 16:35 UTCEchelonGraph re-scored
  47. 2026-10-11 20:11 UTCEchelonGraph re-scored
  48. 2026-10-11 18:23 UTCEchelonGraph re-scored
  49. 2026-10-11 14:57 UTCEchelonGraph re-scored
  50. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  51. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  52. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  53. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  54. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  55. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  56. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  57. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  58. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  59. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  60. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  61. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  62. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  63. 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  64. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  65. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  66. 2026-09-23 07:34 UTCEchelonGraph re-scored
  67. 2026-09-23 07:34 UTCVendor advisory
  68. 2026-09-23 07:34 UTCGHSA enrichmentGHSA-qpmf-9p9c-455w · GitHub CVSS 6.8
  69. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  70. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  71. 2026-09-18 07:02 UTCEchelonGraph re-scored
  72. 2026-09-18 07:02 UTCVendor advisory
  73. 2026-09-18 07:02 UTCGHSA enrichmentGHSA-qpmf-9p9c-455w · GitHub CVSS 6.8
  74. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  75. 2026-09-14 00:53 UTCEchelonGraph re-scored

Frequently asked(5)

What is CVE-2026-13595?
CVE-2026-13595 is a medium-severity vulnerability; its CVE record was published on June 29, 2026. A flaw was found in the libblkid library of util-linux. During nested partition probing, the BSD, Minix, Solaris x86, and UnixWare partition probers cache a raw pointer to a parent partition entry in a dynamically allocated array. When subsequent partition additions cause the array to be…
When was CVE-2026-13595 made public?
CVE-2026-13595 was made public on May 7, 2026: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on June 29, 2026. EchelonGraph's copy of the record carries a last-modified date of November 12, 2026; the record at its source may have been updated since.
Is CVE-2026-13595 actively exploited?
CVE-2026-13595 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (3rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-13595?
CVE-2026-13595 has a CVSS v3 base score of 5.3 (NVD). EchelonGraph synthesises NVD + FIRST EPSS + GHSA into a combined EG score of 6.8 (MEDIUM).
How do I remediate CVE-2026-13595?
A fix for CVE-2026-13595 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-13595 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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