CVE-2026-58471

HIGHNVD 7.17.1
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.1 under NVD CVSS v3. EPSS exploit probability: 0.4% (32nd percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 5.9 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2026-07-07) is not newer than that change (2026-10-25), so it does not.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 6 sources updated this week

Also known asEUVD-2026-42083 (ENISA EUVD) · GHSA-vv88-699v-w5rh (GitHub Security Advisories)Source: ENISA EUVD

7.1EG
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: 0.4%CVSS: 7.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

GNU Wget through 1.25.0, fixed in commit c2640fe, contains a heap buffer overflow vulnerability in the convert_fname() function within src/url.c that allows remote attackers to trigger memory corruption through a server-supplied filename requiring character set conversion. When the output buffer is too small during iconv E2BIG reallocation, the reallocation logic miscalculates the remaining space, leading to a heap buffer overflow that can be exploited via a maliciously crafted server response.

CVSS v3
7.1
EG Score
7.1HIGHmedium confidence
EG Risk
32
EG Risk 32/100

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)
Severity71% × 45%
Impact severity (EG Severity): CVSS 7.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.4% × 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
0.4%
EPSS %ILE
32nd
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 (7.1): severity, escalated by confirmed exploitation. This CVE's 7.1 is its impact severity (EG Severity), not escalated.

EG Severity
7.1 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-25). 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: 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.

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

July 7, 2026

Last Modified

October 25, 2026

Advisory Details (2)

Auto-updated Jul 8, 2026
Patch available.
Web page

GNU Wget 1.25.0 Heap Buffer Overflow via convert_fname() in url.c | Advisories | VulnCheck

https://www.vulncheck.com/advisories/gnu-wget-heap-buffer-overflow-via-convert-fname-in-url-c
Web page

Fix buffer size handling in filename conversion (c2640fe5) · Commits · Wget / wget · GitLab

https://gitlab.com/gnuwget/wget/-/commit/c2640fe5171c59f87c58dc9fcb195b2d18b010ee

Vendor Advisories for CVE-2026-58471(2)

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

Patch Availability(4)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuwget (1.20.3-1ubuntu2.1+esm2) @ focal2026-10-25ubuntu
redhatwget-0:1.24.5-8.el10_22026-09-01redhat
redhatwget-0:1.19.5-16.el8_102026-09-01redhat
redhatwget-0:1.21.1-11.el9_82026-09-01redhat

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
wget1.21-1 ... 1.25.0-3 (12 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
wget1.21.3-1 ... 1.25.0-3 (8 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
wget1.25.0-2, 1.25.0-3
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
wget1.25.0-2, 1.25.0-3
  • every version on: no fix on record
—

Weakness Classification(1)

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

Additional Vendor Advisories

(3)

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 16× in last 7d / 46× 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 270 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 170 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  2. 2026-10-25 20:28 UTCEG score recompute▲ 1.20
  3. 2026-10-25 20:28 UTCVendor advisory
  4. 2026-10-25 20:28 UTCGHSA enrichmentGHSA-vv88-699v-w5rh · GitHub CVSS 5.9
  5. 2026-10-25 20:25 UTCNVD updateCVSS v3 → 7.1 · severity → HIGH
  6. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  7. 2026-10-25 14:16 UTCEG score recompute
  8. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  9. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  10. 2026-10-22 21:00 UTCEG score recompute
  11. 2026-10-22 21:00 UTCVendor advisory
  12. 2026-10-22 21:00 UTCGHSA enrichmentGHSA-vv88-699v-w5rh · GitHub CVSS 5.9
  13. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  14. 2026-10-21 20:25 UTCOSV refresh
  15. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  16. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  17. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  18. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  19. 2026-10-18 03:27 UTCEG score recompute
  20. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  21. 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  22. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  23. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  24. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  25. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 31st percentile
Show 75 more
  1. 2026-10-12 15:53 UTCEG score recompute
  2. 2026-10-11 19:36 UTCEG score recompute
  3. 2026-10-11 16:52 UTCEG score recompute
  4. 2026-10-11 14:14 UTCEG score recompute
  5. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  6. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  7. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  8. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  9. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  10. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  11. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  12. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  13. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  14. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  15. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  16. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  17. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  18. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  19. 2026-09-28 13:36 UTCEG score recompute
  20. 2026-09-28 13:36 UTCVendor advisory
  21. 2026-09-28 13:36 UTCGHSA enrichmentGHSA-vv88-699v-w5rh · GitHub CVSS 5.9
  22. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  23. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  24. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  25. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  26. 2026-09-23 06:16 UTCEG score recompute
  27. 2026-09-23 06:16 UTCVendor advisory
  28. 2026-09-23 06:16 UTCGHSA enrichmentGHSA-vv88-699v-w5rh · GitHub CVSS 5.9
  29. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  30. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  31. 2026-09-18 05:50 UTCEG score recompute
  32. 2026-09-18 05:50 UTCVendor advisory
  33. 2026-09-18 05:50 UTCGHSA enrichmentGHSA-vv88-699v-w5rh · GitHub CVSS 5.9
  34. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  35. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  36. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  37. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  38. 2026-09-14 06:07 UTCEG score recompute
  39. 2026-09-14 06:07 UTCVendor advisory
  40. 2026-09-14 06:07 UTCGHSA enrichmentGHSA-vv88-699v-w5rh · GitHub CVSS 5.9
  41. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  42. 2026-09-13 08:29 UTCEG score recompute
  43. 2026-09-13 08:29 UTCVendor advisory
  44. 2026-09-13 08:29 UTCGHSA enrichmentGHSA-vv88-699v-w5rh · GitHub CVSS 5.9
  45. 2026-09-12 03:43 UTCEG score recompute
  46. 2026-09-12 03:43 UTCVendor advisory
  47. 2026-09-12 03:43 UTCGHSA enrichmentGHSA-vv88-699v-w5rh · GitHub CVSS 5.9
  48. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  49. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  50. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  51. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  52. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  53. 2026-09-05 22:53 UTCEG score recompute
  54. 2026-09-05 22:53 UTCVendor advisory
  55. 2026-09-05 22:53 UTCGHSA enrichmentGHSA-vv88-699v-w5rh · GitHub CVSS 5.9
  56. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  57. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  58. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  59. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  60. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  61. 2026-08-30 07:42 UTCEG score recompute
  62. 2026-08-30 07:42 UTCVendor advisory
  63. 2026-08-30 07:42 UTCGHSA enrichmentGHSA-vv88-699v-w5rh · GitHub CVSS 5.9
  64. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  65. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  66. 2026-08-27 21:55 UTCEG score recompute
  67. 2026-08-27 21:55 UTCVendor advisory
  68. 2026-08-27 21:55 UTCGHSA enrichmentGHSA-vv88-699v-w5rh · GitHub CVSS 5.9
  69. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  70. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  71. 2026-08-26 12:59 UTCEG score recompute
  72. 2026-08-26 12:59 UTCVendor advisory
  73. 2026-08-26 12:59 UTCGHSA enrichmentGHSA-vv88-699v-w5rh · GitHub CVSS 5.9
  74. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  75. 2026-08-25 11:58 UTCVendor advisory

Related CVEs(same product + same vendor + same CWE)

Same vendor

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redhat:RHSA-2026:62142 · redhat:RHSA-2026:62144 · ubuntu:USN-8543-1

Frequently asked(5)

What is CVE-2026-58471?
CVE-2026-58471 is a high-severity vulnerability; its CVE record was published on July 7, 2026. GNU Wget through 1.25.0, fixed in commit c2640fe, contains a heap buffer overflow vulnerability in the convert_fname() function within src/url.c that allows remote attackers to trigger memory corruption through a server-supplied filename requiring character set conversion. When the output buffer is…
When was CVE-2026-58471 made public?
CVE-2026-58471 was made public on January 13, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on July 7, 2026. EchelonGraph's copy of the record carries a last-modified date of October 25, 2026; the record at its source may have been updated since.
Is CVE-2026-58471 actively exploited?
CVE-2026-58471 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (32nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-58471?
CVE-2026-58471 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-58471?
A fix for CVE-2026-58471 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-58471 are linked in the Vendor Advisories panel on this page.

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