CVE-2023-51656

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 1.0%, top 40% 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
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

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

Deserialization of Untrusted Data vulnerability in Apache IoTDB.This issue affects Apache IoTDB: from 0.13.0 through 0.13.4.

Users are recommended to upgrade to version 1.2.2, which fixes the issue.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
60.3%
KEV
Not listed

Published

December 21, 2023

Last Modified

June 17, 2026

Advisory Details (2)

Auto-updated Jun 24, 2026
No patch confirmed yet.
generic
https://lists.apache.org/thread/zy3klwpv11vl5n65josbfo2fyzxg3dxc
generic

oss-security - CVE-2023-51656: Apache IoTDB: Unsafe deserialize map in Sync Tool

http://www.openwall.com/lists/oss-security/2023/12/21/5

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
org.apache.iotdb:iotdb-parent0.13.0 ... 1.2.1 (15 versions)1.2.2—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 48× 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.

Showing the most recent 100 of 104 total refreshes for this CVE.

  1. 2026-07-23 14:16 UTCEPSS rescore
  2. 2026-07-23 02:29 UTCEG score recompute
  3. 2026-07-22 23:15 UTCEG score recompute
  4. 2026-07-22 14:06 UTCEPSS rescore
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  18. 2026-07-15 00:25 UTCOSV refresh
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  1. 2026-07-08 15:13 UTCEPSS rescore
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  10. 2026-07-02 16:59 UTCEPSS rescore
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  19. 2026-06-27 01:09 UTCOSV refresh
  20. 2026-06-25 13:48 UTCEPSS rescore
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  22. 2026-06-24 14:04 UTCEPSS rescore
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  24. 2026-06-23 21:31 UTCEPSS rescore
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  26. 2026-06-22 14:24 UTCEPSS rescore
  27. 2026-06-22 14:24 UTCEPSS rescore
  28. 2026-06-21 14:55 UTCEPSS rescore
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  30. 2026-06-21 01:58 UTCEPSS rescore
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  32. 2026-06-19 19:24 UTCEPSS rescore
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  39. 2026-06-14 23:16 UTCEPSS rescore
  40. 2026-06-13 22:59 UTCEPSS rescore
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  42. 2026-06-12 23:11 UTCEPSS rescore
  43. 2026-06-12 23:10 UTCEPSS rescore
  44. 2026-06-11 13:59 UTCEPSS rescore
  45. 2026-06-10 22:17 UTCEPSS rescore
  46. 2026-06-10 13:21 UTCEPSS rescore
  47. 2026-06-09 11:30 UTCOSV refresh
  48. 2026-06-08 14:16 UTCEPSS rescore
  49. 2026-06-08 14:16 UTCEPSS rescore
  50. 2026-06-07 15:24 UTCEPSS rescore
  51. 2026-06-07 15:23 UTCEPSS rescore
  52. 2026-06-06 13:46 UTCEPSS rescore
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  54. 2026-06-05 22:46 UTCEPSS rescore
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  68. 2026-05-31 00:15 UTCEPSS rescore
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  70. 2026-05-29 13:43 UTCEPSS rescore
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  72. 2026-05-27 13:39 UTCEPSS rescore
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  74. 2026-05-26 13:43 UTCEPSS rescore
  75. 2026-05-26 13:43 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-51656?
CVE-2023-51656 is a critical vulnerability published on December 21, 2023. Deserialization of Untrusted Data vulnerability in Apache IoTDB.This issue affects Apache IoTDB: from 0.13.0 through 0.13.4. Users are recommended to upgrade to version 1.2.2, which fixes the issue.
When was CVE-2023-51656 disclosed?
CVE-2023-51656 was first published in the National Vulnerability Database on December 21, 2023, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-51656 actively exploited?
CVE-2023-51656 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 60.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-51656?
CVE-2023-51656 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2023-51656?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-51656, 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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