CVE-2026-57455

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.8 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 98% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this week
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

A fix is available — apply it.

Vim is an open source, command line text editor. Prior to 9.2.0698, the single-byte branch of spell_soundfold_sofo() in src/spell.c translates a word through a spell file's SOFO (sound-folding) byte map into a caller-owned result buffer. Its copy loop advances the output index ri with no upper bound and terminates only on the input NUL, writing one byte per input byte into the MAXWLEN-element stack buffer the caller provides. A word longer than MAXWLEN, passed to soundfold() (or reached via sound-based spell suggestion) while a SOFO-based spell language is active, therefore writes past the end of that buffer. This is a stack out-of-bounds write that corrupts the call frame and crashes the editor. This vulnerability is fixed in 9.2.0698.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
2.2%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 26, 2026

Advisory Details (2)

Auto-updated Jun 26, 2026
Patch available. Sources: github_commit, github.
github Patch Available

Out-of-bounds Write in SOFO Soundfolding in Vim < 9.2.0698 · Advisory · vim/vim · GitHub

https://github.com/vim/vim/security/advisories/GHSA-q8mh-6qm3-25g4
github_commit

commit 497f931f8533 (vim/vim)

Fix landed in vim/vim commit 497f931f8533 — awaiting tagged release

https://github.com/vim/vim/commit/497f931f85339d175d7f69588dd249e8ccfed41b

Vendor Advisories for CVE-2026-57455(1)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuxxd (2:9.1.0967-1ubuntu6.8) @ questing2026-07-06ubuntu
redhatvim-main-9.2.725-1.hum12026-06-26redhat

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.

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 30× in last 7d / 44× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

  1. 2026-07-06 19:47 UTCEG score recompute
  2. 2026-07-06 19:47 UTCVendor advisory
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 06:44 UTCEG score recompute
  6. 2026-07-06 06:44 UTCVendor advisory
  7. 2026-07-05 18:07 UTCEG score recompute
  8. 2026-07-05 18:07 UTCVendor advisory
  9. 2026-07-05 05:28 UTCEG score recompute
  10. 2026-07-05 05:28 UTCVendor advisory
  11. 2026-07-05 02:31 UTCEPSS rescore
  12. 2026-07-05 02:30 UTCEPSS rescore
  13. 2026-07-04 16:49 UTCEG score recompute
  14. 2026-07-04 16:49 UTCVendor advisory
  15. 2026-07-04 04:08 UTCEG score recompute
  16. 2026-07-04 04:08 UTCVendor advisory
  17. 2026-07-03 14:58 UTCEG score recompute
  18. 2026-07-03 14:58 UTCVendor advisory
  19. 2026-07-03 02:17 UTCEG score recompute
  20. 2026-07-03 02:17 UTCVendor advisory
  21. 2026-07-02 13:40 UTCEG score recompute
  22. 2026-07-02 13:40 UTCVendor advisory
  23. 2026-07-02 01:03 UTCEG score recompute
  24. 2026-07-02 01:03 UTCVendor advisory
  25. 2026-07-01 15:07 UTCEPSS rescore
Show 19 more
  1. 2026-07-01 12:22 UTCEG score recompute
  2. 2026-07-01 12:22 UTCVendor advisory
  3. 2026-06-30 23:44 UTCEG score recompute
  4. 2026-06-30 23:22 UTCEPSS rescore
  5. 2026-06-30 10:57 UTCEG score recompute
  6. 2026-06-29 22:16 UTCEG score recompute
  7. 2026-06-29 14:06 UTCEPSS rescore
  8. 2026-06-29 09:38 UTCEG score recompute
  9. 2026-06-28 21:01 UTCEG score recompute
  10. 2026-06-28 14:07 UTCEPSS rescore
  11. 2026-06-28 08:23 UTCEG score recompute
  12. 2026-06-28 04:56 UTCEPSS rescore
  13. 2026-06-27 19:45 UTCEG score recompute
  14. 2026-06-27 07:07 UTCEG score recompute
  15. 2026-06-27 03:08 UTCEPSS rescore
  16. 2026-06-26 18:30 UTCEG score recompute▲ 3.80
  17. 2026-06-26 09:42 UTCNVD updateCVSS v3 → 7.8 · severity → HIGH
  18. 2026-06-25 17:49 UTCEG score recompute
  19. 2026-06-25 17:48 UTCNVD updatefirst tracked

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-57455?
CVE-2026-57455 is a high vulnerability published on June 25, 2026. Vim is an open source, command line text editor. Prior to 9.2.0698, the single-byte branch of spellsoundfoldsofo() in src/spell.c translates a word through a spell file's SOFO (sound-folding) byte map into a caller-owned result buffer. Its copy loop advances the output index ri with no upper bound…
When was CVE-2026-57455 disclosed?
CVE-2026-57455 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57455 actively exploited?
CVE-2026-57455 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-57455?
CVE-2026-57455 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-57455?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57455, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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