CVE-2023-53000

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-03-27. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

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

In the Linux kernel, the following vulnerability has been resolved:

netlink: prevent potential spectre v1 gadgets

Most netlink attributes are parsed and validated from __nla_validate_parse() or validate_nla()

u16 type = nla_type(nla);

if (type == 0 || type > maxtype) { /* error or continue */ }

@type is then used as an array index and can be used as a Spectre v1 gadget.

array_index_nospec() can be used to prevent leaking content of kernel memory to malicious users.

This should take care of vast majority of netlink uses, but an audit is needed to take care of others where validation is not yet centralized in core netlink functions.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
9.9%
KEV
Not listed

Published

March 27, 2025

Last Modified

October 30, 2025

References (5)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 47× 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 02:29 UTCEG score recompute
  2. 2026-07-22 23:16 UTCEG score recompute
  3. 2026-07-22 14:07 UTCEPSS rescore
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  5. 2026-07-21 15:23 UTCEPSS rescore
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  1. 2026-07-07 13:44 UTCEPSS rescore
  2. 2026-07-07 06:21 UTCOSV refresh
  3. 2026-07-06 16:26 UTCEPSS rescore
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  5. 2026-07-06 02:22 UTCEPSS rescore
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  32. 2026-06-18 17:35 UTCOSV refresh
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  42. 2026-06-10 22:17 UTCEPSS rescore
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  44. 2026-06-08 14:16 UTCEPSS rescore
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  63. 2026-05-30 08:42 UTCEG score recompute
  64. 2026-05-30 08:42 UTCGHSA enrichment
  65. 2026-05-29 21:50 UTCOSV refresh
  66. 2026-05-29 13:43 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-53000?
CVE-2023-53000 is a high vulnerability published on March 27, 2025. In the Linux kernel, the following vulnerability has been resolved: netlink: prevent potential spectre v1 gadgets Most netlink attributes are parsed and validated from nlavalidateparse() or validate_nla() u16 type = nla_type(nla); if (type == 0 || type > maxtype) { / error or continue / } @type is…
When was CVE-2023-53000 disclosed?
CVE-2023-53000 was first published in the National Vulnerability Database on March 27, 2025, with the most recent update on October 30, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-53000 actively exploited?
CVE-2023-53000 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 9.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-53000?
CVE-2023-53000 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2023-53000?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-53000, 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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