CVE-2026-11605

HIGHPre-NVD 7.57.5
EchelonGraph scoreMEDIUM confidence

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

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-22. A secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 4 sources updated this week

Also known asEUVD-2026-47707 (ENISA EUVD) · GHSA-qhh7-j7w3-xfxq (GitHub Security Advisories)Source: ENISA EUVD

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: 0.7%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

The issue is a resource exhaustion vulnerability associated with DNSSEC validation. BIND always validates all RRSIG records in an answer, even if they are not strictly needed. A query to an authoritative server/zone which returns many valid but superfluous RRSIG records causes the validator to waste disproportionate CPU time. This issue affects BIND 9 versions 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, and 9.20.9-S1 through 9.20.24-S1.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100

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.
Exploitation0.5% × 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
0.7%
EPSS %ILE
52nd
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
0.7% within 30 daysSource: FIRST EPSS. 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

July 22, 2026

Last Modified

October 24, 2026

Advisory Details (3)

Auto-updated Jul 22, 2026
Patch available.
Web page

CVE-2026-11605: Unnecessary validation of DNSSEC signed records

https://kb.isc.org/docs/cve-2026-11605
Web page

Index of /isc/bind9/9.21.24

https://downloads.isc.org/isc/bind9/9.21.24
Web page

Index of /isc/bind9/9.20.26

https://downloads.isc.org/isc/bind9/9.20.26

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntubind9-utils (1:9.20.24-1ubuntu0.2) @ resolute2026-10-24ubuntu
redhatbind-main-9.18.50-22.hum12026-07-21redhat

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

(7 across 7 ecosystems)
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
bind—
  • every version up to 9.20.26-r0: fixed in 9.20.26-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
bind—
  • every version up to 9.20.26-r0: fixed in 9.20.26-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
bind—
  • every version up to 9.20.26-r0: fixed in 9.20.26-r0
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
bind91:9.16.15-1 ... 1:9.16.50-1~deb11u5 (17 versions)
  • every version up to 1:9.16.50-1~deb11u6: fixed in 1:9.16.50-1~deb11u6
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
bind91:9.18.12-1 ... 1:9.18.49-1~deb12u1 (16 versions)
  • every version up to 1:9.18.49-1~deb12u2: fixed in 1:9.18.49-1~deb12u2
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
bind91:9.20.11-4 ... 1:9.20.26-1~deb13u1~bpo12+1 (21 versions)
  • every version up to 1:9.20.26-1~deb13u1: fixed in 1:9.20.26-1~deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
bind91:9.20.11-4 ... 1:9.20.26-1~deb13u1~bpo12+1 (22 versions)
  • every version up to 1:9.20.26-1: fixed in 1:9.20.26-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

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 13× in last 7d / 49× 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 100 of 343 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. None are among the latest 100 rows. The 243 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  2. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  3. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  4. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  5. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  6. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  7. 2026-10-25 14:50 UTCEG score recompute
  8. 2026-10-24 18:28 UTCVendor advisory
  9. 2026-10-24 18:28 UTCGHSA enrichmentGHSA-qhh7-j7w3-xfxq · GitHub severity HIGH · GitHub CVSS 7.5
  10. 2026-10-24 17:03 UTCEG score recompute
  11. 2026-10-24 17:03 UTCVendor advisory
  12. 2026-10-24 17:03 UTCGHSA enrichmentGHSA-qhh7-j7w3-xfxq · GitHub severity HIGH · GitHub CVSS 7.5
  13. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  14. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  15. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  16. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  17. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  18. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  19. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  20. 2026-10-18 05:05 UTCEG score recompute
  21. 2026-10-17 19:04 UTCEG score recompute
  22. 2026-10-17 19:04 UTCVendor advisory
  23. 2026-10-17 19:03 UTCGHSA enrichmentGHSA-qhh7-j7w3-xfxq · GitHub severity HIGH · GitHub CVSS 7.5
  24. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  25. 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.5% · 44th percentile
Show 75 more
  1. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  2. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  3. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  4. 2026-10-12 16:37 UTCEG score recompute
  5. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  6. 2026-10-11 20:13 UTCEG score recompute
  7. 2026-10-11 18:25 UTCEG score recompute
  8. 2026-10-11 14:58 UTCEG score recompute
  9. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  10. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  11. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  12. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  13. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  14. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  15. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  16. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  17. 2026-10-04 13:25 UTCEG score recompute
  18. 2026-10-04 13:25 UTCVendor advisory
  19. 2026-10-04 13:25 UTCGHSA enrichmentGHSA-qhh7-j7w3-xfxq · GitHub severity HIGH · GitHub CVSS 7.5
  20. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  21. 2026-10-03 03:34 UTCEG score recompute
  22. 2026-10-03 03:34 UTCVendor advisory
  23. 2026-10-03 03:34 UTCGHSA enrichmentGHSA-qhh7-j7w3-xfxq · GitHub severity HIGH · GitHub CVSS 7.5
  24. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  25. 2026-10-01 06:28 UTCEG score recompute
  26. 2026-10-01 06:28 UTCVendor advisory
  27. 2026-10-01 06:28 UTCGHSA enrichmentGHSA-qhh7-j7w3-xfxq · GitHub severity HIGH · GitHub CVSS 7.5
  28. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  29. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  30. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  31. 2026-09-28 05:18 UTCEG score recompute
  32. 2026-09-28 05:18 UTCVendor advisory
  33. 2026-09-28 05:18 UTCGHSA enrichmentGHSA-qhh7-j7w3-xfxq · GitHub severity HIGH · GitHub CVSS 7.5
  34. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  35. 2026-09-24 11:28 UTCVendor advisory
  36. 2026-09-24 11:27 UTCGHSA enrichmentGHSA-qhh7-j7w3-xfxq · GitHub severity HIGH · GitHub CVSS 7.5
  37. 2026-09-23 22:26 UTCEG score recompute
  38. 2026-09-23 22:26 UTCVendor advisory
  39. 2026-09-23 22:26 UTCGHSA enrichmentGHSA-qhh7-j7w3-xfxq · GitHub severity HIGH · GitHub CVSS 7.5
  40. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  41. 2026-09-22 23:09 UTCEG score recompute
  42. 2026-09-22 23:09 UTCVendor advisory
  43. 2026-09-22 23:09 UTCGHSA enrichmentGHSA-qhh7-j7w3-xfxq · GitHub severity HIGH · GitHub CVSS 7.5
  44. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  45. 2026-09-20 02:01 UTCEG score recompute
  46. 2026-09-20 02:01 UTCVendor advisory
  47. 2026-09-20 02:01 UTCGHSA enrichmentGHSA-qhh7-j7w3-xfxq · GitHub severity HIGH · GitHub CVSS 7.5
  48. 2026-09-18 22:41 UTCEG score recompute
  49. 2026-09-18 22:41 UTCVendor advisory
  50. 2026-09-18 22:41 UTCGHSA enrichmentGHSA-qhh7-j7w3-xfxq · GitHub severity HIGH · GitHub CVSS 7.5
  51. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  52. 2026-09-18 03:11 UTCEG score recompute
  53. 2026-09-18 03:11 UTCVendor advisory
  54. 2026-09-18 03:11 UTCGHSA enrichmentGHSA-qhh7-j7w3-xfxq · GitHub severity HIGH · GitHub CVSS 7.5
  55. 2026-09-17 02:10 UTCEG score recompute
  56. 2026-09-17 02:10 UTCVendor advisory
  57. 2026-09-17 02:10 UTCGHSA enrichmentGHSA-qhh7-j7w3-xfxq · GitHub severity HIGH · GitHub CVSS 7.5
  58. 2026-09-16 07:02 UTCEG score recompute
  59. 2026-09-16 07:02 UTCVendor advisory
  60. 2026-09-16 07:02 UTCGHSA enrichmentGHSA-qhh7-j7w3-xfxq · GitHub severity HIGH · GitHub CVSS 7.5
  61. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  62. 2026-09-14 11:28 UTCVendor advisory
  63. 2026-09-14 11:28 UTCGHSA enrichmentGHSA-qhh7-j7w3-xfxq · GitHub severity HIGH · GitHub CVSS 7.5
  64. 2026-09-13 22:26 UTCEG score recompute
  65. 2026-09-13 22:26 UTCVendor advisory
  66. 2026-09-13 22:26 UTCGHSA enrichmentGHSA-qhh7-j7w3-xfxq · GitHub severity HIGH · GitHub CVSS 7.5
  67. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  68. 2026-09-13 08:58 UTCVendor advisory
  69. 2026-09-13 08:58 UTCGHSA enrichmentGHSA-qhh7-j7w3-xfxq · GitHub severity HIGH · GitHub CVSS 7.5
  70. 2026-09-12 19:56 UTCEG score recompute
  71. 2026-09-12 19:56 UTCVendor advisory
  72. 2026-09-12 19:56 UTCGHSA enrichmentGHSA-qhh7-j7w3-xfxq · GitHub severity HIGH · GitHub CVSS 7.5
  73. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  74. 2026-09-12 06:54 UTCVendor advisory
  75. 2026-09-12 06:54 UTCGHSA enrichmentGHSA-qhh7-j7w3-xfxq · GitHub severity HIGH · GitHub CVSS 7.5

Frequently asked(5)

What is CVE-2026-11605?
CVE-2026-11605 is a high-severity vulnerability; its CVE record was published on July 22, 2026. The issue is a resource exhaustion vulnerability associated with DNSSEC validation. BIND always validates all RRSIG records in an answer, even if they are not strictly needed. A query to an authoritative server/zone which returns many valid but superfluous RRSIG records causes the validator to…
When was CVE-2026-11605 made public?
CVE-2026-11605 was made public on July 22, 2026: 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 July 22, 2026. EchelonGraph's copy of the record carries a last-modified date of October 24, 2026; the record at its source may have been updated since.
Is CVE-2026-11605 actively exploited?
CVE-2026-11605 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (52nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-11605?
CVE-2026-11605 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-11605?
A fix for CVE-2026-11605 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-11605 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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