CVE-2024-42458

CRITICALNVD 9.89.8
EchelonGraph scoreMEDIUM confidence

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

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2024-08-02. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 4 sources updated this week
9.8EG
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).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

server.c in Neat VNC (aka neatvnc) before 0.8.1 does not properly validate the security type, a related issue to CVE-2006-2369.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
59
EG Risk 59/100

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)
Severity98% × 45%
The EG Score, 9.8 of 10.
Exploitation0.8% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (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: 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
0.8%
EPSS %ILE
56th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

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

Exploitation none (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.

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

August 2, 2024

Last Modified

September 5, 2024

Advisory Details (6)

Auto-updated Oct 7, 2026
Patch available. Sources: github_commit, github_release.
Web page

oss-security - RE: Neat VNC Security Vulnerability

https://www.openwall.com/lists/oss-security/2024/08/02/7
Web page

oss-security - Re: Neat VNC Security Vulnerability

https://www.openwall.com/lists/oss-security/2024/08/02/10
Web page

oss-security - Neat VNC Security Vulnerability

https://www.openwall.com/lists/oss-security/2024/08/02/1
GitHub release Patch Available

v0.8.1

Patch available: any1/neatvnc v0.8.1

https://github.com/any1/neatvnc/releases/tag/v0.8.1
Web page

Comparing v0.8.0...v0.8.1 · any1/neatvnc · GitHub

https://github.com/any1/neatvnc/compare/v0.8.0...v0.8.1
GitHub commit Patch Available

commit cc71650a69ab (any1/neatvnc)

Patch available: any1/neatvnc v0.8.1 (contains commit cc71650a69ab)

https://github.com/any1/neatvnc/commit/cc71650a69abc2573a0d96d082409d2468802d47

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
neatvnc0.5.4+dfsg-1 ... 1.0.1+dfsg-1 (17 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
neatvnc—
  • every version up to 0.8.0+dfsg-2: fixed in 0.8.0+dfsg-2
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
neatvnc—
  • every version up to 0.8.0+dfsg-2: fixed in 0.8.0+dfsg-2
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 37× 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 93 of 186 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. 7 repeat rows among the latest 100 are merged into the row they repeat. The 93 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:30 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  2. 2026-10-14 15:47 UTCEG score recompute
  3. 2026-10-14 15:47 UTCGHSA enrichmentGHSA-jxwh-98r5-mx84 · GitHub severity CRITICAL · GitHub CVSS 9.8
  4. 2026-10-13 16:30 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  5. 2026-10-13 14:49 UTCGHSA enrichmentGHSA-jxwh-98r5-mx84 · GitHub severity CRITICAL · GitHub CVSS 9.8
  6. 2026-10-12 17:47 UTCEG score recompute
  7. 2026-10-12 16:31 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  8. 2026-10-12 13:48 UTCGHSA enrichmentGHSA-jxwh-98r5-mx84 · GitHub severity CRITICAL · GitHub CVSS 9.8
  9. 2026-10-11 21:12 UTCEG score recompute
  10. 2026-10-11 16:05 UTCEG score recompute
  11. 2026-10-11 13:46 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  12. 2026-10-10 19:58 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  13. 2026-10-10 03:33 UTCOSV refresh
  14. 2026-10-09 20:05 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  15. 2026-10-08 17:08 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  16. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  17. 2026-10-06 15:15 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  18. 2026-10-05 17:41 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  19. 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  20. 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  21. 2026-09-30 19:51 UTCEG score recompute
  22. 2026-09-30 15:01 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  23. 2026-09-29 15:17 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  24. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  25. 2026-09-27 13:44 UTCEPSS rescoreEPSS 0.8% · 55th percentile
Show 68 more
  1. 2026-09-26 15:57 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  2. 2026-09-24 14:01 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  3. 2026-09-23 13:46 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  4. 2026-09-22 14:47 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  5. 2026-09-21 20:32 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  6. 2026-09-20 20:14 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  7. 2026-09-20 13:14 UTCOSV refresh
  8. 2026-09-19 15:40 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  9. 2026-09-18 19:26 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  10. 2026-09-16 14:06 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  11. 2026-09-16 05:12 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  12. 2026-09-15 03:08 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  13. 2026-09-13 16:45 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  14. 2026-09-12 14:59 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  15. 2026-09-11 14:51 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  16. 2026-09-11 09:35 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  17. 2026-09-08 21:58 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  18. 2026-09-07 16:00 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  19. 2026-09-06 13:46 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  20. 2026-09-05 15:27 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  21. 2026-09-04 13:59 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  22. 2026-09-04 05:05 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  23. 2026-09-02 14:10 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  24. 2026-09-01 14:23 UTCOSV refresh
  25. 2026-09-01 13:52 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  26. 2026-08-30 19:16 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  27. 2026-08-28 21:39 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  28. 2026-08-27 14:23 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  29. 2026-08-25 13:47 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  30. 2026-08-24 14:15 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  31. 2026-08-23 00:18 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  32. 2026-08-21 23:47 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  33. 2026-08-20 22:54 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  34. 2026-08-19 17:02 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  35. 2026-08-18 13:46 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  36. 2026-08-17 13:45 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  37. 2026-08-16 14:54 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  38. 2026-08-16 02:13 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  39. 2026-08-15 14:37 UTCOSV refresh
  40. 2026-08-15 01:28 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  41. 2026-08-13 21:59 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  42. 2026-08-12 13:49 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  43. 2026-08-11 13:40 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  44. 2026-08-10 23:58 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  45. 2026-08-09 13:45 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  46. 2026-08-08 16:35 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  47. 2026-08-07 16:25 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  48. 2026-08-06 13:45 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  49. 2026-08-05 19:16 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  50. 2026-08-04 15:08 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  51. 2026-08-04 10:36 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  52. 2026-08-03 10:34 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  53. 2026-08-02 02:25 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  54. 2026-08-01 04:14 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  55. 2026-07-31 04:46 UTCOSV refresh
  56. 2026-07-30 16:26 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  57. 2026-07-30 01:29 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  58. 2026-07-28 15:34 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  59. 2026-07-27 14:11 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  60. 2026-07-26 14:53 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  61. 2026-07-25 14:16 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  62. 2026-07-24 14:16 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  63. 2026-07-23 14:17 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  64. 2026-07-23 02:39 UTCEG score recompute
  65. 2026-07-22 14:07 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  66. 2026-07-21 15:23 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  67. 2026-07-20 17:06 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  68. 2026-07-19 14:30 UTCEPSS rescoreEPSS 0.8% · 53rd percentile

Related CVEs(same product + same CWE)

Same product

1 shown

Debian:12:neatvnc

Frequently asked(5)

What is CVE-2024-42458?
CVE-2024-42458 is a critical-severity vulnerability; its CVE record was published on August 2, 2024. server.c in Neat VNC (aka neatvnc) before 0.8.1 does not properly validate the security type, a related issue to CVE-2006-2369.
When was the CVE record for CVE-2024-42458 published?
The CVE record for CVE-2024-42458 was published on August 2, 2024. 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 5, 2024; the record at its source may have been updated since.
Is CVE-2024-42458 actively exploited?
CVE-2024-42458 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (56th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2024-42458?
CVE-2024-42458 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2024-42458?
A fix for CVE-2024-42458 is available: update to the fixed version the vendor names in its advisory.

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