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

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.

Published: 2023-12-21 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-51656 is rated Moderate Risk (60.4/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.03%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-51656

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.56% 1.03% +0.48%
2 2026-03-25 0.73% 0.56% -0.17%
3 2025-11-21 — 0.73% —

Full EPSS history (20 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-51656

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]

Weakness enumeration for CVE-2023-51656

GitHub Security Advisory for CVE-2023-51656

GHSA-f23h-52hj-99p6 · Severity: critical · Ecosystem: maven — Apache IoTDB: Unsafe deserialize map in Sync Tool

Affected software / configurations for CVE-2023-51656

Vendor Product Version Raw CPE
apache iotdb >= 0.13.0, <= 0.13.4 cpe:2.3:a:apache:iotdb:*:*:*:*:*:*:*:*

References for CVE-2023-51656

URL Tags
http://www.openwall.com/lists/oss-security/2023/12/21/5 Mailing List Third Party Advisory
https://lists.apache.org/thread/zy3klwpv11vl5n65josbfo2fyzxg3dxc Issue Tracking Mailing List Vendor Advisory
cvelogic Threat Intelligence