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.
CVE-2023-29483
“—” beside the score: it is equal to NVD's CVSS score.
This high-severity CVE scores 7.0 under NVD CVSS v3. EPSS exploit probability: 1.9% (79th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 5.9 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2024-04-11) is not newer than that change (2025-11-04), so it does not.
Also known asEUVD-2024-1084 (ENISA EUVD) · GHSA-3rq5-2g8h-59hc (GitHub Security Advisories)Source: ENISA EUVD
- CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
A fix is available — apply it.
- CVSS v3
- 7.0
- EG Score
- 7.0HIGHmedium confidence
- EG Risk
- 48EG Risk 48/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity70% × 45%Impact severity (EG Severity): CVSS 7.0 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation40% × 40%EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 1.9%
- EPSS %ILE
- 79th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (7.0): severity, escalated by confirmed exploitation. This CVE's 7.0 is its impact severity (EG Severity), not escalated.
- EG Severity
- 7.0 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
- EG Likelihood
- 1.9% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track 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). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
April 11, 2024
Last Modified
November 4, 2025
References (12)
- MITRE · CVE Programhttps://github.com/eventlet/eventlet/issues/913Exploit · Issue Tracking
- MITRE · CVE Programhttps://github.com/eventlet/eventlet/releases/tag/v0.35.2Release Notes
- MITRE · CVE Programhttps://github.com/rthalley/dnspython/issues/1045Exploit · Issue Tracking
- MITRE · CVE Programhttps://github.com/rthalley/dnspython/releases/tag/v2.6.0Release Notes
- MITRE · CVE Programhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NLRKR57IFVKQC2GCXZBFLCLBAWBWL3F6/Mailing List
- MITRE · CVE Programhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VOHJOO3OM65UIUUUVDEXMCTXNM6LXZEH/Mailing List
- MITRE · CVE Programhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3BNSIK5NFYSAP53Y45GOCMOQHHDLGIF/Mailing List
- MITRE · CVE Programhttps://security.netapp.com/advisory/ntap-20240510-0001/Third Party Advisory
- MITRE · CVE Programhttps://security.snyk.io/vuln/SNYK-PYTHON-DNSPYTHON-6241713Third Party Advisory
- MITRE · CVE Programhttps://www.dnspython.org/Product
- CVE Programhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NLRKR57IFVKQC2GCXZBFLCLBAWBWL3F6/
- CVE Programhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VOHJOO3OM65UIUUUVDEXMCTXNM6LXZEH/
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.
- RHSA-2024:9423Red Hat Product SecurityMedium
Red Hat Security Advisory: python-dns security update
- RHSA-2024:4960Red Hat Product SecurityHigh
Red Hat Security Advisory: OpenShift Container Platform 4.14.34 bug fix and security update
- RHSA-2024:4846Red Hat Product SecurityMedium
Red Hat Security Advisory: OpenShift Container Platform 4.13.46 security update
- RHSA-2024:4699Red Hat Product SecurityHigh
Red Hat Security Advisory: OpenShift Container Platform 4.15.23 bug fix and security update
- RHSA-2024:0045Red Hat Product SecurityHigh
Red Hat Security Advisory: OpenShift Container Platform 4.16.0 security update
- RHSA-2024:3483Red Hat Product SecurityMedium
Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.4 Container Security and Bug Fix Update
- RHSA-2024:3275Red Hat Product SecurityMedium
Red Hat Security Advisory: python-dns security update
Patch Availability(9)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| redhat | python-dns-0:2.6.1-3.el9 | 2024-11-12 | redhat |
| redhat | openshift4/ose-ironic-rhel9:v4.14.0-202407301840.p0.g2d4e89c.assembly.stream.el9 | 2024-08-07 | redhat |
| redhat | openshift4/ose-ironic-rhel9:v4.13.0-202407230838.p0.g0456ffe.assembly.stream.el9 | 2024-07-31 | redhat |
| redhat | openshift4/ose-ironic-rhel9:v4.15.0-202407181606.p0.gea6d005.assembly.stream.el9 | 2024-07-25 | redhat |
| redhat | python-eventlet-0:0.33.1-6.el9 | 2024-06-27 | redhat |
| redhat | ansible-automation-platform-24/ee-supported-rhel9:1.0.0-660 | 2024-05-30 | redhat |
| redhat | python-dns-0:1.15.0-12.el8_10 | 2024-05-22 | redhat |
| pip | dnspython @ 2.6.1 (fixes < 2.6.1) | — | ghsa |
| pip | eventlet @ 0.35.2 (fixes < 0.35.2) | — | ghsa |
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)
Debian:11(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| dnspython | 2.0.0-1 ... 2.8.0-5 (25 versions) |
| — |
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| dnspython | 2.3.0-1 ... 2.8.0-6 (18 versions) |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| dnspython | — |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| dnspython | — |
| — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 40× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 98 of 219 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 2 repeat rows among the latest 100 are merged into the row they repeat. The 121 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-01 16:30 UTCEPSS rescoreEPSS 1.9% · 79th percentile
- 2026-11-01 08:21 UTCGHSA enrichmentGHSA-3rq5-2g8h-59hc · GitHub severity MODERATE · GitHub CVSS 5.9
- 2026-11-01 08:21 UTCEG score recompute
- 2026-10-31 16:29 UTCEPSS rescoreEPSS 1.9% · 79th percentile
- 2026-10-30 16:31 UTCEPSS rescoreEPSS 1.9% · 79th percentile
- 2026-10-29 16:30 UTCEPSS rescoreEPSS 1.9% · 79th percentile
- 2026-10-28 16:29 UTCEPSS rescoreEPSS 1.9% · 79th percentile
- 2026-10-28 05:49 UTCEG score recompute
- 2026-10-28 05:49 UTCVendor advisory
- 2026-10-27 16:29 UTCEPSS rescoreEPSS 1.9% · 79th percentile
- 2026-10-26 16:28 UTCEPSS rescoreEPSS 1.9% · 79th percentile
- 2026-10-25 17:44 UTCEG score recompute
- 2026-10-25 16:29 UTCEPSS rescoreEPSS 1.9% · 79th percentile
- 2026-10-24 16:29 UTCEPSS rescoreEPSS 1.9% · 79th percentile
- 2026-10-23 16:29 UTCEPSS rescoreEPSS 1.9% · 79th percentile
- 2026-10-22 16:31 UTCEPSS rescoreEPSS 1.9% · 79th percentile
- 2026-10-21 16:29 UTCEPSS rescoreEPSS 1.9% · 79th percentile
- 2026-10-21 04:17 UTCEG score recompute
- 2026-10-21 04:17 UTCVendor advisory
- 2026-10-20 16:29 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-10-19 16:29 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-10-18 16:29 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-10-18 08:05 UTCEG score recompute
- 2026-10-17 16:29 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-10-16 16:35 UTCEPSS rescoreEPSS 1.9% · 78th percentile
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- 2026-10-15 16:29 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-10-14 16:29 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-10-13 16:29 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-10-12 18:28 UTCEG score recompute
- 2026-10-12 16:30 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-10-11 21:54 UTCEG score recompute
- 2026-10-11 15:36 UTCOSV refresh
- 2026-10-11 13:45 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-10-10 19:57 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-10-09 20:05 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-10-08 17:06 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-10-07 23:45 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-10-06 15:15 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-10-05 17:41 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-10-04 23:20 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-10-03 14:23 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-10-02 16:23 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-10-01 19:47 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-09-30 16:21 UTCEG score recompute
- 2026-09-30 15:01 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-09-29 15:16 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-09-28 13:49 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-09-27 13:42 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-09-26 00:22 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-09-24 14:01 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-09-23 13:45 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-09-22 14:45 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-09-22 03:15 UTCOSV refresh
- 2026-09-20 20:14 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-09-16 14:05 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-09-13 16:44 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-09-12 14:58 UTCEPSS rescoreEPSS 1.9% · 78th percentile
- 2026-09-11 14:50 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-09-11 09:34 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-09-08 21:57 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-09-07 15:59 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-09-06 13:45 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-09-05 15:25 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-09-04 13:58 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-09-04 05:04 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-09-03 00:30 UTCOSV refresh
- 2026-09-02 14:09 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-09-01 13:51 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-30 19:15 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-30 01:19 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-28 21:38 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-27 14:23 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-26 14:43 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-25 13:46 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-24 14:14 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-23 00:17 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-21 23:46 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-20 22:53 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-19 17:02 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-18 13:46 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-17 13:44 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-16 14:53 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-16 12:30 UTCOSV refresh
- 2026-08-16 02:12 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-15 01:28 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-13 21:58 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-12 13:48 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-11 13:39 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-09 13:44 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-08 16:34 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-07 16:24 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-06 13:44 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-05 19:15 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-04 15:07 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-04 10:35 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-03 10:34 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-02 02:24 UTCEPSS rescoreEPSS 1.9% · 77th percentile
- 2026-08-01 07:06 UTCOSV refresh
Related CVEs(same product + same vendor + same CWE)
Same product
4 shownDebian:11:dnspython · PyPI:dnspython · PyPI:eventlet
Same vendor
10 shownredhat:RHSA-2024:4699 · redhat:RHSA-2024:0045 · redhat:RHSA-2024:4960
Frequently asked(5)
What is CVE-2023-29483?
When was the CVE record for CVE-2023-29483 published?
Is CVE-2023-29483 actively exploited?
What is the CVSS score of CVE-2023-29483?
How do I remediate CVE-2023-29483?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-29483
Is Your Infrastructure Affected by CVE-2023-29483?
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