CVE-2026-59857

MEDIUMNVD 5.55.5
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 5.5 under NVD CVSS v3. EPSS exploit probability: 0.1% (1st 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
5.5EG
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: 5.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Vim is an open source, command line text editor. Prior to 9.2.0725, the single-byte branch of spell_soundfold_sal() in src/spell.c translates a word through a spell file's SAL sound-folding rules into a caller-owned result buffer, but its result writes are guarded with reslen < MAXWLEN, allowing reslen to reach MAXWLEN before res[reslen] = NUL writes one byte past the end of the MAXWLEN-element stack buffer. A boundary-length word passed to soundfold(), or reached via sound-based spell suggestion while a SAL-based spell language is active under a non-multibyte 8-bit encoding, can corrupt the eval_soundfold() stack frame and crash the editor. This issue is fixed in version 9.2.0725.

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
25
EG Risk 25/100

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)
Severity55% × 45%
The EG Score, 5.5 of 10.
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
1st
KEV
Not listed

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 9, 2026

Last Modified

July 10, 2026

Advisory Details (2)

Auto-updated Jul 9, 2026
Patch available. Sources: github, github_commit.
GitHub advisoryMentions a patch (unverified)

Out-of-bounds Write in SAL Soundfolding in Vim < 9.2.0725 · Advisory · vim/vim · GitHub

Affected: 9.2.0698; the single-byte SAL branch

https://github.com/vim/vim/security/advisories/GHSA-m3hf-xcm3-xhm2
GitHub commit

commit d22ff1c955ff (vim/vim)

Fix landed in vim/vim commit d22ff1c955ff — awaiting tagged release

https://github.com/vim/vim/commit/d22ff1c955ff87e8273210eae125aab0e85b6c30

Vendor Advisories for CVE-2026-59857(6)

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

Patch Availability(7)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuvim-tiny (2:7.4.1689-3ubuntu1.5+esm37) @ xenial2026-10-01ubuntu
redhatrhui5/rhua-rhel9:17902420042026-09-24redhat
redhatrhui5/installer-rhel9:17894829612026-09-16redhat
redhatvim-2:8.2.2637-26.el9_8.212026-09-10redhat
redhatvim-2:9.1.083-9.el10_2.202026-09-10redhat
redhatvim-2:8.0.1763-31.el8_10.72026-09-10redhat
redhatvim-main-9.2.780-1.hum12026-07-03redhat

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

(5 across 5 ecosystems)
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
vim—
  • every version up to 9.2.0854-r0: fixed in 9.2.0854-r0
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
vim2:8.2.2434-3 ... 2:9.2.0858-1 (63 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
vim2:9.0.1378-2 ... 2:9.2.0858-1 (45 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
vim2:9.1.1230-2 ... 2:9.2.0858-1 (19 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
vim2:9.1.1230-2 ... 2:9.2.0524-1 (17 versions)
  • every version up to 2:9.2.0782-1: fixed in 2:9.2.0782-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

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 11× in last 7d / 38× 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 176 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 76 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

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

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

Frequently asked(5)

What is CVE-2026-59857?
CVE-2026-59857 is a medium-severity vulnerability; its CVE record was published on July 9, 2026. Vim is an open source, command line text editor. Prior to 9.2.0725, the single-byte branch of spellsoundfoldsal() in src/spell.c translates a word through a spell file's SAL sound-folding rules into a caller-owned result buffer, but its result writes are guarded with reslen < MAXWLEN, allowing…
When was the CVE record for CVE-2026-59857 published?
The CVE record for CVE-2026-59857 was published on July 9, 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 July 10, 2026; the record at its source may have been updated since.
Is CVE-2026-59857 actively exploited?
CVE-2026-59857 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-59857?
CVE-2026-59857 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-59857?
A fix for CVE-2026-59857 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-59857 are linked in the Vendor Advisories panel on this page.

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