CVE-2023-3341

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2023-09-20. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2.9%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

The code that processes control channel messages sent to named calls certain functions recursively during packet parsing. Recursion depth is only limited by the maximum accepted packet size; depending on the environment, this may cause the packet-parsing code to run out of available stack memory, causing named to terminate unexpectedly. Since each incoming control channel message is fully parsed before its contents are authenticated, exploiting this flaw does not require the attacker to hold a valid RNDC key; only network access to the control channel's configured TCP port is necessary. This issue affects BIND 9 versions 9.2.0 through 9.16.43, 9.18.0 through 9.18.18, 9.19.0 through 9.19.16, 9.9.3-S1 through 9.16.43-S1, and 9.18.0-S1 through 9.18.18-S1.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
50
EG Risk 50/100

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)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation2.9% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
2.9%
EPSS %ILE
86th
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 (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
2.9% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-17). 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; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

September 20, 2023

Last Modified

December 2, 2025

References (8)

Patch Availability(13)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntudnsutils (1:9.18.12-1ubuntu1.2) @ lunar2026-05-24ubuntu
ubuntulwresd (1:9.10.3.dfsg.P4-8ubuntu1.19+esm7) @ xenial2026-05-24ubuntu
redhatbind-dyndb-ldap-0:2.3-8.el6_10.12025-01-06redhat
redhatbind9.16-32:9.16.23-0.7.el8_6.32023-10-17redhat
redhatbind-32:9.11.4-26.P2.el7_9.152023-10-12redhat
redhatbind-32:9.16.23-1.el9_0.32023-10-12redhat
redhatbind-32:9.16.23-11.el9_2.22023-10-12redhat
redhatbind-32:9.11.4-26.P2.el8_1.82023-10-09redhat
redhatbind-32:9.11.26-4.el8_4.32023-10-09redhat
redhatbind-32:9.11.13-6.el8_2.62023-10-09redhat
redhatbind-32:9.11.36-3.el8_6.52023-10-05redhat
redhatbind-32:9.11.36-8.el8_8.22023-10-05redhat
redhatbind9.16-32:9.16.23-0.14.el8_8.22023-10-05redhat

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

(15 across 15 ecosystems)
Alpine:v3.15(1)
PackageVulnerable rangeFix by version rangeDependents
bind—
  • 9.2.0 up to 9.16.44-r0: fixed in 9.16.44-r0
—
Alpine:v3.16(1)
PackageVulnerable rangeFix by version rangeDependents
bind—
  • 9.2.0 up to 9.16.44-r0: fixed in 9.16.44-r0
—
Alpine:v3.17(1)
PackageVulnerable rangeFix by version rangeDependents
bind—
  • 9.2.0 up to 9.18.19-r0: fixed in 9.18.19-r0
—
Alpine:v3.18(1)
PackageVulnerable rangeFix by version rangeDependents
bind—
  • 9.2.0 up to 9.18.19-r0: fixed in 9.18.19-r0
—
Alpine:v3.19(1)
PackageVulnerable rangeFix by version rangeDependents
bind—
  • 9.2.0 up to 9.18.19-r0: fixed in 9.18.19-r0
—
Alpine:v3.20(1)
PackageVulnerable rangeFix by version rangeDependents
bind—
  • 9.2.0 up to 9.18.19-r0: fixed in 9.18.19-r0
—
Alpine:v3.21(1)
PackageVulnerable rangeFix by version rangeDependents
bind—
  • 9.2.0 up to 9.18.19-r0: fixed in 9.18.19-r0
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
bind—
  • 9.2.0 up to 9.18.19-r0: fixed in 9.18.19-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
bind—
  • 9.2.0 up to 9.18.19-r0: fixed in 9.18.19-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
bind—
  • 9.2.0 up to 9.18.19-r0: fixed in 9.18.19-r0
—
Debian:10(1)
PackageVulnerable rangeFix by version rangeDependents
bind91:9.11.5.P4+dfsg-5.1 ... 1:9.11.5.P4+dfsg-5.1+deb10u9 (10 versions)
  • every version up to 1:9.11.5.P4+dfsg-5.1+deb10u10: fixed in 1:9.11.5.P4+dfsg-5.1+deb10u10
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
bind91:9.16.15-1 ... 1:9.16.42-1~deb11u1 (10 versions)
  • every version up to 1:9.16.44-1~deb11u1: fixed in 1:9.16.44-1~deb11u1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
bind91:9.18.12-1 ... 1:9.18.19-1~deb12u1~bpo11+1 (6 versions)
  • every version up to 1:9.18.19-1~deb12u1: fixed in 1:9.18.19-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
bind9—
  • every version up to 1:9.19.17-1: fixed in 1:9.19.17-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
bind9—
  • every version up to 1:9.19.17-1: fixed in 1:9.19.17-1
—

Weakness Classification(2)

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

Additional Vendor Advisories

(2)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 8× in last 7d / 33× 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 83 of 193 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. 17 repeat rows among the latest 100 are merged into the row they repeat. The 110 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-20 16:30 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  2. 2026-10-19 16:29 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  3. 2026-10-18 16:29 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  4. 2026-10-18 08:00 UTCEG score recompute
  5. 2026-10-17 16:30 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  6. 2026-10-16 16:36 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  7. 2026-10-15 16:29 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  8. 2026-10-14 16:30 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  9. 2026-10-13 16:30 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  10. 2026-10-13 01:54 UTCOSV refresh
  11. 2026-10-12 18:26 UTCEG score recompute
  12. 2026-10-12 16:31 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  13. 2026-10-11 21:52 UTCEG score recompute
  14. 2026-10-11 13:45 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  15. 2026-10-10 19:57 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  16. 2026-10-09 20:05 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  17. 2026-10-08 17:06 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  18. 2026-10-07 23:46 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  19. 2026-10-06 15:15 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  20. 2026-10-05 17:41 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  21. 2026-10-03 14:23 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  22. 2026-10-01 19:48 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  23. 2026-09-30 16:24 UTCEG score recompute
  24. 2026-09-30 15:01 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  25. 2026-09-29 15:17 UTCEPSS rescoreEPSS 2.9% · 86th percentile
Show 58 more
  1. 2026-09-28 13:49 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  2. 2026-09-27 13:42 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  3. 2026-09-26 15:56 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  4. 2026-09-26 00:22 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  5. 2026-09-24 14:01 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  6. 2026-09-23 13:46 UTCEPSS rescoreEPSS 2.9% · 86th percentile
  7. 2026-09-22 23:32 UTCOSV refresh
  8. 2026-09-20 20:14 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  9. 2026-09-18 19:25 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  10. 2026-09-17 19:25 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  11. 2026-09-16 14:06 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  12. 2026-09-16 05:11 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  13. 2026-09-12 14:58 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  14. 2026-09-11 14:50 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  15. 2026-09-11 09:34 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  16. 2026-09-08 21:58 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  17. 2026-09-07 15:59 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  18. 2026-09-06 13:45 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  19. 2026-09-05 15:26 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  20. 2026-09-04 13:58 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  21. 2026-09-04 05:04 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  22. 2026-09-03 18:16 UTCOSV refresh
  23. 2026-09-02 14:09 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  24. 2026-09-01 13:51 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  25. 2026-08-30 19:15 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  26. 2026-08-30 01:20 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  27. 2026-08-28 21:39 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  28. 2026-08-27 14:23 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  29. 2026-08-26 14:43 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  30. 2026-08-25 13:46 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  31. 2026-08-23 00:17 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  32. 2026-08-21 23:47 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  33. 2026-08-20 22:53 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  34. 2026-08-19 17:02 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  35. 2026-08-18 13:46 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  36. 2026-08-17 13:45 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  37. 2026-08-17 07:31 UTCOSV refresh
  38. 2026-08-16 14:54 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  39. 2026-08-16 02:12 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  40. 2026-08-15 01:28 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  41. 2026-08-13 21:58 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  42. 2026-08-12 13:48 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  43. 2026-08-11 13:39 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  44. 2026-08-08 16:35 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  45. 2026-08-07 16:25 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  46. 2026-08-06 13:45 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  47. 2026-08-05 19:15 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  48. 2026-08-04 15:07 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  49. 2026-08-03 10:34 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  50. 2026-08-02 02:25 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  51. 2026-08-02 02:06 UTCOSV refresh
  52. 2026-08-01 04:13 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  53. 2026-07-30 16:26 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  54. 2026-07-30 01:28 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  55. 2026-07-28 15:34 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  56. 2026-07-26 14:52 UTCEPSS rescoreEPSS 2.6% · 84th percentile
  57. 2026-07-25 14:16 UTCEPSS rescoreEPSS 2.6% · 83rd percentile
  58. 2026-07-24 14:16 UTCEPSS rescoreEPSS 2.6% · 83rd percentile

Frequently asked(5)

What is CVE-2023-3341?
CVE-2023-3341 is a high-severity vulnerability; its CVE record was published on September 20, 2023. The code that processes control channel messages sent to named calls certain functions recursively during packet parsing. Recursion depth is only limited by the maximum accepted packet size; depending on the environment, this may cause the packet-parsing code to run out of available stack memory,…
When was CVE-2023-3341 made public?
CVE-2023-3341 was made public on September 20, 2023: that is the date its CVE record's CNA, Internet Systems Consortium (ISC), gives for when the vulnerability was made public. The CVE record itself was published on September 20, 2023. EchelonGraph's copy of the record carries a last-modified date of December 2, 2025; the record at its source may have been updated since.
Is CVE-2023-3341 actively exploited?
CVE-2023-3341 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.9% probability of exploitation in the next 30 days (86th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-3341?
CVE-2023-3341 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2023-3341?
A fix for CVE-2023-3341 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2023-3341 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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