CVE-2023-21103

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2023-05-16. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 0

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

In registerPhoneAccount of PhoneAccountRegistrar.java, uncaught exceptions in parsing persisted user data could lead to local persistent denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-12 Android-12L Android-13Android ID: A-259064622

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
0.8%
KEV
Not listed

Published

May 15, 2023

Last Modified

January 24, 2025

References (2)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 33× 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. 2026-07-23 02:18 UTCEG score recompute
  2. 2026-07-22 23:05 UTCEG score recompute
  3. 2026-07-22 14:06 UTCEPSS rescore
  4. 2026-07-20 17:05 UTCEPSS rescore
  5. 2026-07-18 10:03 UTCEPSS rescore
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  1. 2026-06-28 14:06 UTCEPSS rescore
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  3. 2026-06-25 13:48 UTCEPSS rescore
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  49. 2026-05-31 22:29 UTCEPSS rescore
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  54. 2026-05-29 13:43 UTCEPSS rescore
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  56. 2026-05-28 13:43 UTCEPSS rescore
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  61. 2026-05-26 07:18 UTCEPSS rescore
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  63. 2026-05-26 07:17 UTCEPSS rescore
  64. 2026-05-25 01:04 UTCEG score recompute
  65. 2026-05-25 01:04 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2023-21103?
CVE-2023-21103 is a medium vulnerability published on May 15, 2023. In registerPhoneAccount of PhoneAccountRegistrar.java, uncaught exceptions in parsing persisted user data could lead to local persistent denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-12…
When was CVE-2023-21103 disclosed?
CVE-2023-21103 was first published in the National Vulnerability Database on May 15, 2023, with the most recent update on January 24, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-21103 actively exploited?
CVE-2023-21103 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-21103?
CVE-2023-21103 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2023-21103?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-21103, 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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