CVE-2023-29483

HIGHNVD 7.07.0—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.0 under NVD CVSS v3. EPSS exploit probability: 1.9% (78th percentile of EPSS-scored CVEs). 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
Elevated
7.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.9%CVSS: 7.0Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

eventlet before 0.35.2, as used in dnspython before 2.6.0, allows remote attackers to interfere with DNS name resolution by quickly sending an invalid packet from the expected IP address and source port, aka a "TuDoor" attack. In other words, dnspython does not have the preferred behavior in which the DNS name resolution algorithm would proceed, within the full time window, in order to wait for a valid packet. NOTE: dnspython 2.6.0 is unusable for a different reason that was addressed in 2.6.1.

CVSS v3
7.0
EG Score
7.0HIGHmedium confidence
EG Risk
48
EG Risk 48/100CISA SSVC

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
Severity70% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
1.9%
EPSS %ILE
78th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

April 11, 2024

Last Modified

November 4, 2025

References (22)

Vendor Advisories for CVE-2023-29483(7)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(7)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatpython-dns-0:2.6.1-3.el92024-11-12redhat
redhatopenshift4/ose-ironic-rhel9:v4.14.0-202407301840.p0.g2d4e89c.assembly.stream.el92024-08-07redhat
redhatopenshift4/ose-ironic-rhel9:v4.13.0-202407230838.p0.g0456ffe.assembly.stream.el92024-07-31redhat
redhatopenshift4/ose-ironic-rhel9:v4.15.0-202407181606.p0.gea6d005.assembly.stream.el92024-07-25redhat
redhatpython-eventlet-0:0.33.1-6.el92024-06-27redhat
redhatansible-automation-platform-24/ee-supported-rhel9:1.0.0-6602024-05-30redhat
redhatpython-dns-0:1.15.0-12.el8_102024-05-22redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(6 across 5 ecosystems)
PyPI(2)
PackageVulnerable rangeFix by version rangeDependents
dnspython1.0.0 ... 2.6.0rc1 (45 versions)
  • every version up to 2.6.1: fixed in 2.6.1
—
eventlet0.10.0 ... 0.9.17 (53 versions)
  • every version up to 0.35.2: fixed in 0.35.2
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
dnspython2.0.0-1 ... 2.8.0-5 (25 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
dnspython2.3.0-1 ... 2.8.0-6 (18 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
dnspython—
  • every version up to 2.6.0-1: fixed in 2.6.0-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
dnspython—
  • every version up to 2.6.0-1: fixed in 2.6.0-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 25× 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 187 total refreshes for this CVE.

  1. 2026-10-09 20:05 UTCEPSS rescore
  2. 2026-10-08 17:06 UTCEPSS rescore
  3. 2026-10-07 23:45 UTCEPSS rescore
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  24. 2026-08-16 12:30 UTCOSV refresh
  25. 2026-08-16 02:12 UTCEPSS rescore
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  27. 2026-08-13 21:58 UTCEPSS rescore
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  57. 2026-07-23 02:21 UTCEG score recompute
  58. 2026-07-22 23:09 UTCEG score recompute
  59. 2026-07-22 14:06 UTCEPSS rescore
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  61. 2026-07-21 15:23 UTCEPSS rescore
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  74. 2026-07-15 01:58 UTCEPSS rescore
  75. 2026-07-14 14:10 UTCOSV refresh

Related CVEs(same product + same vendor)

Frequently asked(5)

What is CVE-2023-29483?
CVE-2023-29483 is a high vulnerability published on April 11, 2024. eventlet before 0.35.2, as used in dnspython before 2.6.0, allows remote attackers to interfere with DNS name resolution by quickly sending an invalid packet from the expected IP address and source port, aka a "TuDoor" attack. In other words, dnspython does not have the preferred behavior in which…
When was CVE-2023-29483 disclosed?
CVE-2023-29483 was first published on April 11, 2024, with the most recent update on November 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-29483 actively exploited?
CVE-2023-29483 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.9% probability of exploitation in the next 30 days (78th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-29483?
CVE-2023-29483 has a CVSS v3 base score of 7.0 (NVD).
How do I remediate CVE-2023-29483?
A fix for CVE-2023-29483 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2023-29483 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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