CVE-2018-1000824

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-14. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 3%CVSS: 9.8Exploit: None knownExposed: 0

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

MegaMek version < v0.45.1 contains a Other/Unknown vulnerability in Object Stream Connection that can result in Disclosure of confidential data, denial of service, SSRF, remote code execution.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
50(Track)
EG Risk 50/100SSVC: Track

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
Severity98% × 45%
Exploitation3% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
3%
EPSS %ILE
87%
KEV
Not listed

Published

December 20, 2018

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated Jun 5, 2026
No patch confirmed yet.
generic

Object Deserialisation Vulnerability in ObjectStreamConnection.java · Issue #1162 · MegaMek/megamek · GitHub

https://github.com/MegaMek/megamek/issues/1162
generic

MegaMek Java Objection Injection | 0dd - The Zero (0) Day Division

https://0dd.zone/2018/10/28/megamek-Object-Injection/

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 42× 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. 2026-07-26 14:51 UTCEPSS rescore
  2. 2026-07-26 14:51 UTCEPSS rescore
  3. 2026-07-23 14:15 UTCEPSS rescore
  4. 2026-07-23 01:32 UTCEG score recompute
  5. 2026-07-22 22:12 UTCEG score recompute
  6. 2026-07-22 14:04 UTCEPSS rescore
  7. 2026-07-21 15:21 UTCEPSS rescore
  8. 2026-07-21 01:17 UTCOSV refresh
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  1. 2026-07-07 13:42 UTCEPSS rescore
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  9. 2026-07-03 20:26 UTCOSV refresh
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  35. 2026-06-15 17:45 UTCEPSS rescore
  36. 2026-06-15 08:43 UTCOSV refresh
  37. 2026-06-14 23:14 UTCEPSS rescore
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  43. 2026-06-11 13:57 UTCEPSS rescore
  44. 2026-06-10 22:15 UTCEPSS rescore
  45. 2026-06-10 13:19 UTCEPSS rescore
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  65. 2026-05-29 13:41 UTCEPSS rescore
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  67. 2026-05-28 13:42 UTCEPSS rescore
  68. 2026-05-28 00:09 UTCEG score recompute
  69. 2026-05-28 00:09 UTCGHSA enrichment
  70. 2026-05-27 20:35 UTCOSV refresh
  71. 2026-05-27 13:38 UTCEPSS rescore
  72. 2026-05-27 13:38 UTCEPSS rescore
  73. 2026-05-26 13:42 UTCEPSS rescore
  74. 2026-05-26 07:17 UTCEPSS rescore
  75. 2026-05-26 07:17 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2018-1000824?
CVE-2018-1000824 is a critical vulnerability published on December 20, 2018. MegaMek version < v0.45.1 contains a Other/Unknown vulnerability in Object Stream Connection that can result in Disclosure of confidential data, denial of service, SSRF, remote code execution.
When was CVE-2018-1000824 disclosed?
CVE-2018-1000824 was first published in the National Vulnerability Database on December 20, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-1000824 actively exploited?
CVE-2018-1000824 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3% probability of exploitation in the next 30 days, which ranks it in the top 13.0% of all scored CVEs.
What is the CVSS score of CVE-2018-1000824?
CVE-2018-1000824 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2018-1000824?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-1000824, 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.

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