CVE-2023-45897

CRITICALNVD 5.59.1
EchelonGraph scoreMEDIUM confidence

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

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2023-10-28. NVD baseline CVSS 5.5; sources differ by 3.6.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 4 sources updated this weekElevated

Also known asEUVD-2023-50160 (ENISA EUVD) · GHSA-5qgg-v88w-rgh6 (GitHub Security Advisories)Source: ENISA EUVD

9.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 5.5Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

exfatprogs before 1.2.2 allows out-of-bounds memory access, such as in read_file_dentry_set.

CVSS v3
5.5
EG Score
9.1CRITICALmedium confidence
EG Risk
57
EG Risk 57/100

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)
Severity91% × 45%
Impact severity (EG Severity): CVSS 9.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
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 public PoC (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
0.4%
EPSS %ILE
34th
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 (9.1): severity, escalated by confirmed exploitation. This CVE's 9.1 is its impact severity (EG Severity), not escalated.

EG Severity
9.1 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). 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; Track* at high (mission-essential systems).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 low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation public PoC (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

October 28, 2023

Last Modified

June 17, 2026

Advisory Details (5)

Auto-updated Oct 14, 2026
Patch available. Sources: github_commit, github_release.
GitHub release Patch Available

exfatprogs-1.2.2 version released

Patch available: exfatprogs/exfatprogs 1.2.2

https://github.com/exfatprogs/exfatprogs/releases/tag/1.2.2
GitHub commit Patch Available

commit ec78688e5fb5 (exfatprogs/exfatprogs)

Patch available: exfatprogs/exfatprogs 1.2.2 (contains commit ec78688e5fb5)

https://github.com/exfatprogs/exfatprogs/commit/ec78688e5fb5a70e13df82b4c0da1e6228d3ccdf
GitHub commit Patch Available

commit 4abc55e97657 (exfatprogs/exfatprogs)

Patch available: exfatprogs/exfatprogs 1.2.2 (contains commit 4abc55e97657)

https://github.com/exfatprogs/exfatprogs/commit/4abc55e976573991e6a1117bb2b3711e59da07ae
GitHub commit Patch Available

commit 22d0e43e8d24 (exfatprogs/exfatprogs)

Patch available: exfatprogs/exfatprogs 1.2.2 (contains commit 22d0e43e8d24)

https://github.com/exfatprogs/exfatprogs/commit/22d0e43e8d24119cbfc6efafabb0dec6517a86c4
Web page

CVE-2023-45897: a vulnerability in the Linux exFAT userspace tools – My DFIR Blog

https://dfir.ru/2023/11/01/cve-2023-45897-a-vulnerability-in-the-linux-exfat-userspace-tools/

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuexfatprogs (1.1.3-1ubuntu0.1) @ jammy2026-11-01ubuntu
redhatexfatprogs-0:1.2.2-2.el92024-04-30redhat

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
exfatprogs1.1.0-1
  • every version up to 1.1.0-1+deb11u1: fixed in 1.1.0-1+deb11u1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
exfatprogs1.2.0-1
  • every version up to 1.2.0-1+deb12u1: fixed in 1.2.0-1+deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
exfatprogs—
  • every version up to 1.2.2-1: fixed in 1.2.2-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
exfatprogs—
  • every version up to 1.2.2-1: fixed in 1.2.2-1
—

Weakness Classification(1)

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

All Vendor Advisories

(2)

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 28× in last 7d / 95× 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 285 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 185 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:40 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  2. 2026-11-02 06:53 UTCEG score recompute
  3. 2026-11-02 06:53 UTCVendor advisory
  4. 2026-11-02 06:53 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  5. 2026-11-01 16:31 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  6. 2026-11-01 06:50 UTCEG score recompute
  7. 2026-11-01 06:50 UTCVendor advisory
  8. 2026-11-01 06:50 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  9. 2026-10-31 16:30 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  10. 2026-10-31 06:47 UTCEG score recompute
  11. 2026-10-31 06:47 UTCVendor advisory
  12. 2026-10-31 06:47 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  13. 2026-10-30 16:31 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  14. 2026-10-30 06:44 UTCEG score recompute
  15. 2026-10-30 06:44 UTCVendor advisory
  16. 2026-10-30 06:44 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  17. 2026-10-29 16:30 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  18. 2026-10-29 06:41 UTCEG score recompute
  19. 2026-10-29 06:41 UTCVendor advisory
  20. 2026-10-29 06:41 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  21. 2026-10-28 16:29 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  22. 2026-10-28 06:36 UTCEG score recompute
  23. 2026-10-28 06:36 UTCVendor advisory
  24. 2026-10-28 06:36 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  25. 2026-10-27 16:29 UTCEPSS rescoreEPSS 0.4% · 31st percentile
Show 75 more
  1. 2026-10-27 06:33 UTCEG score recompute
  2. 2026-10-27 06:33 UTCVendor advisory
  3. 2026-10-27 06:33 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  4. 2026-10-26 16:29 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  5. 2026-10-26 02:40 UTCVendor advisory
  6. 2026-10-26 02:40 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  7. 2026-10-25 17:33 UTCEG score recompute
  8. 2026-10-25 16:30 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  9. 2026-10-25 02:36 UTCEG score recompute
  10. 2026-10-25 02:36 UTCVendor advisory
  11. 2026-10-25 02:36 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  12. 2026-10-24 16:29 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  13. 2026-10-24 02:34 UTCEG score recompute
  14. 2026-10-24 02:34 UTCVendor advisory
  15. 2026-10-24 02:34 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  16. 2026-10-23 16:29 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  17. 2026-10-23 02:31 UTCEG score recompute
  18. 2026-10-23 02:31 UTCVendor advisory
  19. 2026-10-23 02:30 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  20. 2026-10-22 16:31 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  21. 2026-10-22 02:28 UTCEG score recompute
  22. 2026-10-22 02:28 UTCVendor advisory
  23. 2026-10-22 02:27 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  24. 2026-10-21 16:29 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  25. 2026-10-21 02:22 UTCEG score recompute
  26. 2026-10-21 02:22 UTCVendor advisory
  27. 2026-10-21 02:22 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  28. 2026-10-20 16:30 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  29. 2026-10-20 02:16 UTCEG score recompute
  30. 2026-10-20 02:16 UTCVendor advisory
  31. 2026-10-20 02:15 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  32. 2026-10-19 16:29 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  33. 2026-10-19 01:36 UTCEG score recompute
  34. 2026-10-19 01:36 UTCVendor advisory
  35. 2026-10-19 01:35 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  36. 2026-10-18 16:29 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  37. 2026-10-18 07:48 UTCEG score recompute
  38. 2026-10-18 01:31 UTCEG score recompute
  39. 2026-10-18 01:31 UTCVendor advisory
  40. 2026-10-18 01:30 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  41. 2026-10-17 16:30 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  42. 2026-10-17 01:26 UTCEG score recompute
  43. 2026-10-17 01:26 UTCVendor advisory
  44. 2026-10-17 01:25 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  45. 2026-10-16 16:36 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  46. 2026-10-16 01:19 UTCEG score recompute
  47. 2026-10-16 01:19 UTCVendor advisory
  48. 2026-10-16 01:19 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  49. 2026-10-15 16:29 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  50. 2026-10-14 20:47 UTCEG score recompute
  51. 2026-10-14 20:47 UTCVendor advisory
  52. 2026-10-14 20:47 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  53. 2026-10-14 16:30 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  54. 2026-10-13 16:41 UTCEG score recompute
  55. 2026-10-13 16:41 UTCVendor advisory
  56. 2026-10-13 16:41 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  57. 2026-10-13 16:30 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  58. 2026-10-12 16:37 UTCEG score recompute
  59. 2026-10-12 16:37 UTCVendor advisory
  60. 2026-10-12 16:36 UTCGHSA enrichmentGHSA-5qgg-v88w-rgh6 · GitHub severity CRITICAL · GitHub CVSS 9.1
  61. 2026-10-12 16:31 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  62. 2026-10-11 21:43 UTCEG score recompute
  63. 2026-10-11 13:45 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  64. 2026-10-10 19:57 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  65. 2026-10-09 20:05 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  66. 2026-10-08 17:06 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  67. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  68. 2026-10-06 15:15 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  69. 2026-10-05 17:41 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  70. 2026-10-04 23:20 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  71. 2026-10-03 14:23 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  72. 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  73. 2026-09-30 16:32 UTCEG score recompute
  74. 2026-09-30 15:01 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  75. 2026-09-29 15:17 UTCEPSS rescoreEPSS 0.4% · 29th percentile

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-45897?
CVE-2023-45897 is a critical-severity vulnerability; its CVE record was published on October 28, 2023. exfatprogs before 1.2.2 allows out-of-bounds memory access, such as in read_file_dentry_set.
When was the CVE record for CVE-2023-45897 published?
The CVE record for CVE-2023-45897 was published on October 28, 2023. 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 June 17, 2026; the record at its source may have been updated since.
Is CVE-2023-45897 actively exploited?
CVE-2023-45897 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (34th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-45897?
CVE-2023-45897 has a CVSS v3 base score of 5.5 (NVD). EchelonGraph synthesises NVD + FIRST EPSS + GHSA into a combined EG score of 9.1 (CRITICAL).
How do I remediate CVE-2023-45897?
A fix for CVE-2023-45897 is available: update to the fixed version the vendor names in its advisory.

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