CVE-2025-34095

CRITICALNVD 9.39.3
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.3 under NVD CVSS v3. EPSS exploit probability: 6.2% (93rd 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 weekWeaponized

Also known asEUVD-2025-21031 (ENISA EUVD) · GHSA-fh7x-m234-3vg3 (GitHub Security Advisories)Source: ENISA EUVD

9.3EG
EchelonGraph verdictPlan mitigationNo fix is confirmed yet: check with the vendor for a fixed release; until one is applied, restrict network exposure of the affected system on your normal schedule at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Public exploit code is available (Metasploit)
CISA-KEV: Not listedEPSS PROB: 6.2%CVSS: 9.3Exploit: MetasploitExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

The CVE record's CNA (VulnCheck) lists Real Time Logic Mako Server versions 2.5 up to and including 2.6 as affected. No release containing a fix is confirmed on record.

An OS command injection vulnerability exists in Mako Server versions 2.5 and 2.6, specifically within the tutorial interface provided by the examples/save.lsp endpoint. An unauthenticated attacker can send a crafted PUT request containing arbitrary Lua os.execute() code, which is then persisted on disk and triggered via a subsequent GET request to examples/manage.lsp. This allows remote command execution on the underlying operating system, impacting both Windows and Unix-based deployments.

CVSS v3
9.3
EG Score
9.3CRITICALmedium confidence
EG Risk
83
EG Risk 83/100

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)
Severity93% × 45%
Impact severity (EG Severity): CVSS 9.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation65% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 2 (Weaponized): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (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 yes (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: No fix is confirmed yet. Check with the vendor for a fixed release; until one is applied, restrict network exposure of the affected system on your normal schedule at low or medium mission impact and sooner than that at high.
EPSS PROB
6.2%
EPSS %ILE
93rd
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 (9.3): severity, escalated by confirmed exploitation. This CVE's 9.3 is its impact severity (EG Severity), not escalated.

EG Severity
9.3 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
6.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-02). 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: 3 days if the affected system is publicly exposed; 60 days if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.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.

No fix is confirmed yet. Check with the vendor for a fixed release; until one is applied, restrict network exposure of the affected system on your normal schedule at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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)3 days if the affected system is publicly exposed; 60 days if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

July 10, 2025

Last Modified

April 15, 2026

Advisory Details (2)

Auto-updated Sep 15, 2026
No fix on record yet.
Web page

Mako Server 2.5 - OS Command Injection Remote Command Execution (Metasploit) - Windows remote Exploit

https://www.exploit-db.com/exploits/43132

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 21× in last 7d / 77× 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 99 of 245 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 146 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-03 01:28 UTCEG score recompute
  2. 2026-11-03 01:28 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  3. 2026-11-02 16:42 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  4. 2026-11-02 01:31 UTCEG score recompute
  5. 2026-11-02 01:31 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  6. 2026-11-01 16:32 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  7. 2026-11-01 01:37 UTCEG score recompute
  8. 2026-11-01 01:37 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  9. 2026-10-31 16:31 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  10. 2026-10-31 01:44 UTCEG score recompute
  11. 2026-10-31 01:44 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  12. 2026-10-30 16:32 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  13. 2026-10-30 01:51 UTCEG score recompute
  14. 2026-10-30 01:51 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  15. 2026-10-29 16:31 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  16. 2026-10-29 01:58 UTCEG score recompute
  17. 2026-10-29 01:58 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  18. 2026-10-28 16:30 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  19. 2026-10-28 02:02 UTCEG score recompute
  20. 2026-10-28 02:02 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  21. 2026-10-27 16:30 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  22. 2026-10-27 02:05 UTCEG score recompute
  23. 2026-10-27 02:04 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  24. 2026-10-26 16:30 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  25. 2026-10-25 22:09 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
Show 74 more
  1. 2026-10-25 16:33 UTCEG score recompute
  2. 2026-10-25 16:31 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  3. 2026-10-24 22:09 UTCEG score recompute
  4. 2026-10-24 22:09 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  5. 2026-10-24 16:31 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  6. 2026-10-23 22:11 UTCEG score recompute
  7. 2026-10-23 22:11 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  8. 2026-10-23 16:30 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  9. 2026-10-22 22:14 UTCEG score recompute
  10. 2026-10-22 22:13 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  11. 2026-10-22 16:33 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  12. 2026-10-21 22:08 UTCEG score recompute
  13. 2026-10-21 22:08 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  14. 2026-10-21 16:31 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  15. 2026-10-20 22:12 UTCEG score recompute
  16. 2026-10-20 22:12 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  17. 2026-10-20 16:31 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  18. 2026-10-19 22:18 UTCEG score recompute
  19. 2026-10-19 22:17 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  20. 2026-10-19 16:30 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  21. 2026-10-18 21:06 UTCEG score recompute
  22. 2026-10-18 21:05 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  23. 2026-10-18 16:30 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  24. 2026-10-18 05:37 UTCEG score recompute
  25. 2026-10-17 21:10 UTCEG score recompute
  26. 2026-10-17 21:10 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  27. 2026-10-17 16:33 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  28. 2026-10-16 21:15 UTCEG score recompute
  29. 2026-10-16 21:15 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  30. 2026-10-16 16:38 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  31. 2026-10-15 18:10 UTCEG score recompute
  32. 2026-10-15 18:10 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  33. 2026-10-15 16:30 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  34. 2026-10-14 16:31 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  35. 2026-10-14 11:58 UTCEG score recompute
  36. 2026-10-14 11:57 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  37. 2026-10-13 16:32 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  38. 2026-10-13 11:25 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  39. 2026-10-12 17:10 UTCEG score recompute
  40. 2026-10-12 16:33 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  41. 2026-10-12 11:30 UTCGHSA enrichmentGHSA-fh7x-m234-3vg3 · GitHub severity CRITICAL
  42. 2026-10-11 20:42 UTCEG score recompute
  43. 2026-10-11 18:53 UTCEG score recompute
  44. 2026-10-11 15:30 UTCEG score recompute
  45. 2026-10-11 13:47 UTCEPSS rescoreEPSS 6.2% · 93rd percentile
  46. 2026-10-10 19:59 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  47. 2026-10-09 20:06 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  48. 2026-10-08 17:09 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  49. 2026-10-07 23:46 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  50. 2026-10-06 15:16 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  51. 2026-10-05 17:42 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  52. 2026-10-04 23:21 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  53. 2026-10-03 14:24 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  54. 2026-10-01 19:49 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  55. 2026-09-30 15:02 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  56. 2026-09-28 13:50 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  57. 2026-09-26 15:58 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  58. 2026-09-26 00:24 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  59. 2026-09-24 14:02 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  60. 2026-09-23 13:47 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  61. 2026-09-20 20:15 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  62. 2026-09-18 19:27 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  63. 2026-09-17 19:29 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  64. 2026-09-16 14:07 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  65. 2026-09-16 05:14 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  66. 2026-09-13 16:46 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  67. 2026-09-12 15:00 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  68. 2026-09-11 14:52 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  69. 2026-09-11 09:35 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  70. 2026-09-10 09:33 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  71. 2026-09-08 21:59 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  72. 2026-09-07 16:00 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  73. 2026-09-06 13:46 UTCEPSS rescoreEPSS 6.3% · 93rd percentile
  74. 2026-09-04 05:05 UTCEPSS rescoreEPSS 6.3% · 93rd percentile

Publicly available exploits

(1 reference)

Public exploit code is referenced for this CVE (1 Metasploit module). No fix is confirmed yet, so defenders should restrict or isolate affected systems accordingly until one is published.

  • Metasploitexploit/multi/http/makoserver_cmd_exec✓ verified
    Published Dec 8, 2017

    Mako Server v2.5, 2.6 OS Command Injection RCE

    Open source ↗

Frequently asked(5)

What is CVE-2025-34095?
CVE-2025-34095 is a critical-severity vulnerability; its CVE record was published on July 10, 2025. An OS command injection vulnerability exists in Mako Server versions 2.5 and 2.6, specifically within the tutorial interface provided by the examples/save.lsp endpoint. An unauthenticated attacker can send a crafted PUT request containing arbitrary Lua os.execute() code, which is then persisted on…
When was CVE-2025-34095 made public?
CVE-2025-34095 was made public on November 9, 2017: 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 10, 2025. 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-2025-34095 actively exploited?
CVE-2025-34095 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model places it in Tier 2 (Weaponized), which is not evidence of exploitation: a Metasploit module exists for it. EchelonGraph does not test whether exploit code works. FIRST EPSS estimates a 6.2% probability of exploitation in the next 30 days (93rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-34095?
CVE-2025-34095 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2025-34095?
No fix for CVE-2025-34095 is confirmed yet. Until one is published, restrict network exposure of the affected system — for example, keep it off the internet or limit it to trusted networks — and watch for a fix. The CVE record's CNA (VulnCheck) lists Real Time Logic Mako Server versions 2.5 up to and including 2.6 as affected. No release containing a fix is confirmed on record.

Dependency Blast Radius

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