CVE-2026-85288

MEDIUMPre-NVD 6.76.7
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 6.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1% (2nd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Elevated

Also known asEUVD-2026-84571 (ENISA EUVD)Source: ENISA EUVD

6.7EG
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).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 6.7Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Notepad++ is a free and open-source source code editor. Prior to 8.9.8, Notepad++ incompletely enforces shortcuts.xml HMAC validation because WM_MACRODLGRUNMACRO, the Run a Macro Multiple Times entry point, calls macroPlayback() without the validation used by command(). A tampered shortcuts.xml macro that is blocked through the Macro menu or a shortcut key can therefore execute through the multi-run dialog and invoke internal Notepad++ commands, including commands that launch external programs, in the current user context. This issue is fixed in version 8.9.8.

CVSS v3
6.7
EG Score
6.7MEDIUMmedium confidence
EG Risk
46
EG Risk 46/100

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)
Severity67% × 45%
Impact severity (EG Severity): CVSS 6.7 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, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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
0.1%
EPSS %ILE
2nd
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 (6.7): severity, escalated by confirmed exploitation. This CVE's 6.7 is its impact severity (EG Severity), not escalated.

EG Severity
6.7 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). 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, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 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, Track* at medium and Attend at high mission impact.

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

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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; 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 total (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

September 22, 2026

Last Modified

September 26, 2026

Advisory Details (4)

Auto-updated Sep 22, 2026
Patch available. Sources: github, github_commit, github_release.
Web page

Notepad++ v8.9.8 release | Notepad++

https://notepad-plus-plus.org/news/v898-released
GitHub release Patch Available

Notepad++ release 8.9.8

Patch available: notepad-plus-plus/notepad-plus-plus v8.9.8

https://github.com/notepad-plus-plus/notepad-plus-plus/releases/tag/v8.9.8
GitHub commit

commit 4cd74cb9347b (notepad-plus-plus/notepad-plus-plus)

Fix landed in notepad-plus-plus/notepad-plus-plus commit 4cd74cb9347b — awaiting tagged release

https://github.com/notepad-plus-plus/notepad-plus-plus/commit/4cd74cb9347b9c6caaab17d999e24fc9ed228ff7
GitHub advisoryMentions a patch (unverified)

Shortcuts.xml macro HMAC bypass still reachable via the "Run a Macro Multiple Times" dialog (Notepad++ 8.9.7) · Advisory · notepad-plus-plus/notepad-plus-plus · GitHub

https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-759j-g8j4-867p

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 8× 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.

  1. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  2. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  3. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  4. 2026-10-30 00:25 UTCOSV refresh
  5. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  6. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  7. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  8. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  9. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  10. 2026-10-25 13:55 UTCEG score recompute
  11. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  12. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  13. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  14. 2026-10-22 12:54 UTCEG score recompute
  15. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  16. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  17. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  18. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  19. 2026-10-18 03:05 UTCEG score recompute
  20. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  21. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  22. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  23. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  24. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  25. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
Show 42 more
  1. 2026-10-12 14:52 UTCEG score recompute
  2. 2026-10-11 19:18 UTCEG score recompute
  3. 2026-10-11 16:34 UTCEG score recompute
  4. 2026-10-11 13:51 UTCEG score recompute
  5. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  6. 2026-10-11 06:34 UTCEG score recompute
  7. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  8. 2026-10-10 07:43 UTCEG score recompute
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  10. 2026-10-09 08:51 UTCEG score recompute
  11. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  12. 2026-10-08 09:50 UTCEG score recompute
  13. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  14. 2026-10-07 10:59 UTCEG score recompute
  15. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  16. 2026-10-06 12:08 UTCEG score recompute
  17. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  18. 2026-10-05 13:17 UTCEG score recompute
  19. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  20. 2026-10-03 15:32 UTCEG score recompute
  21. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  22. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  23. 2026-10-02 16:39 UTCEG score recompute
  24. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  25. 2026-09-30 18:49 UTCEG score recompute
  26. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  27. 2026-09-29 19:55 UTCEG score recompute
  28. 2026-09-28 21:04 UTCEG score recompute
  29. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  30. 2026-09-27 22:12 UTCEG score recompute
  31. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  32. 2026-09-26 23:21 UTCEG score recompute
  33. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  34. 2026-09-26 00:22 UTCEG score recompute
  35. 2026-09-25 23:54 UTCEG score recompute
  36. 2026-09-24 17:59 UTCEG score recompute
  37. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  38. 2026-09-23 18:37 UTCEG score recompute
  39. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  40. 2026-09-22 18:32 UTCEG score recompute
  41. 2026-09-22 17:25 UTCEG score recomputeFirst assessed: 6.7 MEDIUM
  42. 2026-09-22 17:23 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-85288?
CVE-2026-85288 is a medium-severity vulnerability; its CVE record was published on September 22, 2026. Notepad++ is a free and open-source source code editor. Prior to 8.9.8, Notepad++ incompletely enforces shortcuts.xml HMAC validation because WM_MACRODLGRUNMACRO, the Run a Macro Multiple Times entry point, calls macroPlayback() without the validation used by command(). A tampered shortcuts.xml…
When was the CVE record for CVE-2026-85288 published?
The CVE record for CVE-2026-85288 was published on September 22, 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 September 26, 2026; the record at its source may have been updated since.
Is CVE-2026-85288 actively exploited?
CVE-2026-85288 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (2nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-85288?
CVE-2026-85288 has a CVSS base score of 6.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-85288?
A fix for CVE-2026-85288 is available: update to the fixed version the vendor names in its advisory.

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