CVE-2025-48997

HIGHNVD 8.78.7
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This high-severity CVE scores 8.7 under NVD CVSS v3. EPSS exploit probability: 0.4% (36th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Trending — 3 sources updated this week
8.7EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 8.7Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Multer is a node.js middleware for handling multipart/form-data. A vulnerability that is present starting in version 1.4.4-lts.1 and prior to version 2.0.1 allows an attacker to trigger a Denial of Service (DoS) by sending an upload file request with an empty string field name. This request causes an unhandled exception, leading to a crash of the process. Users should upgrade to 2.0.1 to receive a patch. No known workarounds are available.

CVSS v3
8.7
EG Score
8.7HIGHmedium confidence
EG Risk
54
EG Risk 54/100

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)
Severity87% × 45%
The EG Score, 8.7 of 10.
Exploitation0.4% × 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 available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
36th
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

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

June 3, 2025

Last Modified

April 15, 2026

Advisory Details (4)

Auto-updated Sep 1, 2026
Patch available. Sources: github_commit, github_pr, github.
GitHub advisoryMentions a patch (unverified)

Multer vulnerable to Denial of Service via unhandled exception · Advisory · expressjs/multer · GitHub

https://github.com/expressjs/multer/security/advisories/GHSA-g5hg-p3ph-g8qg
GitHub pull request

Fixes expressjs/multer#1233. Makes multer handle missing field names.

Upstream fix in progress (PR #1256 · expressjs/multer, state=closed)

https://github.com/expressjs/multer/pull/1256
Web page

TypeError: Cannot read properties of undefined (reading 'length') when fieldNameSize is not set · Issue #1233 · expressjs/multer · GitHub

https://github.com/expressjs/multer/issues/1233
GitHub commit Patch Available

commit 35a3272b6119 (expressjs/multer)

Patch available: expressjs/multer v2.0.1 (contains commit 35a3272b6119)

https://github.com/expressjs/multer/commit/35a3272b611945155e046dd5cef11088587635e9

Vendor Advisories for CVE-2025-48997(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatrhdh/rhdh-hub-rhel9:sha256:aa3c5b50c65aee51b932fafcbf479ce54f15496cffc2744860bd9e135cce815c2025-08-19redhat

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

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
multer—
  • 1.4.4-lts.1 up to 2.0.1: fixed in 2.0.1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 31× 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 90 of 209 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. 10 repeat rows among the latest 100 are merged into the row they repeat. The 119 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:32 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  2. 2026-10-12 17:00 UTCEG score recompute
  3. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  4. 2026-10-11 20:34 UTCEG score recompute
  5. 2026-10-11 18:45 UTCEG score recompute
  6. 2026-10-11 15:21 UTCEG score recompute
  7. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  8. 2026-10-10 21:23 UTCOSV refresh
  9. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  10. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  11. 2026-10-08 17:10 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  12. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  13. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  14. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  15. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  16. 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  17. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  18. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  19. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  20. 2026-09-27 13:45 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  21. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  22. 2026-09-26 00:25 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  23. 2026-09-24 14:02 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  24. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  25. 2026-09-21 21:06 UTCEPSS rescoreEPSS 0.4% · 37th percentile
Show 65 more
  1. 2026-09-21 09:19 UTCOSV refresh
  2. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  3. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  4. 2026-09-17 19:29 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  5. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  6. 2026-09-15 03:09 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  7. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  8. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  9. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  10. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  11. 2026-09-08 21:59 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  12. 2026-09-07 16:00 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  13. 2026-09-06 13:46 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  14. 2026-09-05 15:28 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  15. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  16. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  17. 2026-09-02 07:14 UTCOSV refresh
  18. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  19. 2026-09-01 04:38 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  20. 2026-08-30 19:16 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  21. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  22. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  23. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  24. 2026-08-26 14:45 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  25. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  26. 2026-08-24 14:16 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  27. 2026-08-24 09:22 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  28. 2026-08-23 00:18 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  29. 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  30. 2026-08-20 22:54 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  31. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  32. 2026-08-18 13:47 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  33. 2026-08-17 13:46 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  34. 2026-08-16 14:55 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  35. 2026-08-16 07:10 UTCOSV refresh
  36. 2026-08-16 02:13 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  37. 2026-08-15 01:29 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  38. 2026-08-13 21:59 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  39. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  40. 2026-08-11 13:41 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  41. 2026-08-10 23:59 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  42. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  43. 2026-08-08 16:36 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  44. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  45. 2026-08-05 19:16 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  46. 2026-08-04 15:09 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  47. 2026-08-04 10:37 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  48. 2026-08-03 10:35 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  49. 2026-08-02 02:26 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  50. 2026-08-01 04:15 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  51. 2026-08-01 00:42 UTCOSV refresh
  52. 2026-07-30 16:27 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  53. 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  54. 2026-07-28 15:35 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  55. 2026-07-26 14:54 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  56. 2026-07-25 14:17 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  57. 2026-07-24 14:17 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  58. 2026-07-23 14:18 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  59. 2026-07-23 02:57 UTCEG score recompute
  60. 2026-07-22 14:07 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  61. 2026-07-21 15:24 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  62. 2026-07-20 17:07 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  63. 2026-07-19 14:30 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  64. 2026-07-19 02:28 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  65. 2026-07-18 10:04 UTCEPSS rescoreEPSS 0.4% · 29th percentile

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Frequently asked(5)

What is CVE-2025-48997?
CVE-2025-48997 is a high-severity vulnerability; its CVE record was published on June 3, 2025. Multer is a node.js middleware for handling multipart/form-data. A vulnerability that is present starting in version 1.4.4-lts.1 and prior to version 2.0.1 allows an attacker to trigger a Denial of Service (DoS) by sending an upload file request with an empty string field name. This request causes…
When was the CVE record for CVE-2025-48997 published?
The CVE record for CVE-2025-48997 was published on June 3, 2025. 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 April 15, 2026; the record at its source may have been updated since.
Is CVE-2025-48997 actively exploited?
CVE-2025-48997 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (36th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-48997?
CVE-2025-48997 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2025-48997?
A fix for CVE-2025-48997 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-48997 are linked in the Vendor Advisories panel on this page.

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