CVE-2017-14492

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-14. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
9.8EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 93%
  • Public exploit code is available (Exploit-DB (verified), epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 93%CVSS: 9.8Exploit: Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed: 0

A fix is available — apply it.

Heap-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted IPv6 router advertisement request.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
86(Track*)
EG Risk 86/100SSVC: 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
Severity98% × 45%
Exploitation93% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
93%
EPSS %ILE
100%
KEV
Not listed

Published

October 3, 2017

Last Modified

June 17, 2026

Advisory Details (5)

Auto-updated Sep 8, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic

CVE-2017-14491 - PSIRT.COM

http://www.securityfocus.com/bid/101085
generic

[SECURITY] [DSA 3989-1] dnsmasq security update

http://www.debian.org/security/2017/dsa-3989
generic
http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=24036ea507862c7b7898b68289c8130f85599c10
generic🔴 Active Exploitation
http://thekelleys.org.uk/dnsmasq/CHANGELOG
generic
http://www.securitytracker.com/id/1039474

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntudnsmasq-utils (2.76-5ubuntu0.1) @ zesty2026-05-20ubuntu
ubuntudnsmasq-base (2.59-4ubuntu0.3) @ precise2026-05-20ubuntu
redhatdnsmasq-0:2.76-2.el7_4.22017-10-02redhat
redhatdnsmasq-0:2.66-21.el7_3.22017-10-02redhat

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

(29 across 29 ecosystems)
Alpine:v3.10(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-r0—
Alpine:v3.11(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-r0—
Alpine:v3.12(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-r0—
Alpine:v3.13(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-r0—
Alpine:v3.14(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-r0—
Alpine:v3.15(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-r0—
Alpine:v3.16(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-r0—
Alpine:v3.17(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-r0—
Alpine:v3.18(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-r0—
Alpine:v3.19(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-r0—
Alpine:v3.20(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-r0—
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-r0—
Alpine:v3.3(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.76-r1—
Alpine:v3.4(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.76-r1—
Alpine:v3.5(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.76-r2—
Alpine:v3.6(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.76-r5—
Alpine:v3.7(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-r0—
Alpine:v3.8(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-r0—
Alpine:v3.9(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
dnsmasq—2.78-1—
Debian:7(1)
PackageVulnerable rangeFixed inDependents
dnsmasq2.62-3+deb7u1, 2.62-3+deb7u2, 2.62-3+deb7u32.62-3+deb7u4—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
dnsmasq2.72-3, 2.72-3+deb8u12.72-3+deb8u2—
Debian:9(1)
PackageVulnerable rangeFixed inDependents
dnsmasq2.76-52.76-5+deb9u1—

Weakness Classification(1)

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

All Vendor Advisories

(4)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 1× in last 7d / 8× 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. 2026-09-02 14:07 UTCEPSS rescore
  2. 2026-08-30 19:13 UTCEPSS rescore
  3. 2026-08-28 21:36 UTCEPSS rescore
  4. 2026-08-26 23:39 UTCOSV refresh
  5. 2026-08-24 14:10 UTCEPSS rescore
  6. 2026-08-18 13:43 UTCEPSS rescore
  7. 2026-08-15 01:26 UTCEPSS rescore
  8. 2026-08-10 13:40 UTCOSV refresh
  9. 2026-08-09 13:42 UTCEPSS rescore
  10. 2026-08-06 13:42 UTCEPSS rescore
  11. 2026-07-30 16:24 UTCEPSS rescore
  12. 2026-07-25 14:13 UTCEPSS rescore
  13. 2026-07-25 14:11 UTCOSV refresh
  14. 2026-07-23 01:27 UTCEG score recompute
  15. 2026-07-22 22:06 UTCEG score recompute
  16. 2026-07-22 14:04 UTCEPSS rescore
  17. 2026-07-19 14:28 UTCEPSS rescore
  18. 2026-07-19 14:28 UTCEPSS rescore
  19. 2026-07-19 02:26 UTCEPSS rescore
  20. 2026-07-19 02:26 UTCEPSS rescore
  21. 2026-07-16 16:59 UTCEPSS rescore
  22. 2026-07-16 16:59 UTCEPSS rescore
  23. 2026-07-09 19:06 UTCEPSS rescore
  24. 2026-07-08 09:05 UTCOSV refresh
  25. 2026-06-27 03:05 UTCEPSS rescore
Show 43 more
  1. 2026-06-23 21:30 UTCEPSS rescore
  2. 2026-06-19 20:52 UTCOSV refresh
  3. 2026-06-15 17:45 UTCEPSS rescore
  4. 2026-06-12 23:09 UTCEPSS rescore
  5. 2026-06-08 14:14 UTCEPSS rescore
  6. 2026-06-05 06:08 UTCEPSS rescore
  7. 2026-06-05 06:08 UTCEPSS rescore
  8. 2026-06-04 13:10 UTCEPSS rescore
  9. 2026-06-04 13:10 UTCEPSS rescore
  10. 2026-05-31 00:50 UTCOSV refresh
  11. 2026-05-29 13:41 UTCEPSS rescore
  12. 2026-05-28 13:42 UTCEPSS rescore
  13. 2026-05-28 13:42 UTCEPSS rescore
  14. 2026-05-27 13:38 UTCEPSS rescore
  15. 2026-05-27 13:38 UTCEPSS rescore
  16. 2026-05-22 21:15 UTCEPSS rescore
  17. 2026-05-22 21:15 UTCEPSS rescore
  18. 2026-05-22 21:15 UTCEPSS rescore
  19. 2026-05-20 22:37 UTCEPSS rescore
  20. 2026-05-20 22:37 UTCEPSS rescore
  21. 2026-05-20 11:21 UTCEPSS rescore
  22. 2026-05-20 11:21 UTCEPSS rescore
  23. 2026-05-20 09:52 UTCVendor advisory
  24. 2026-05-20 09:52 UTCGHSA enrichment
  25. 2026-05-20 05:39 UTCVendor advisory
  26. 2026-05-20 05:39 UTCGHSA enrichment
  27. 2026-05-20 01:26 UTCVendor advisory
  28. 2026-05-20 01:26 UTCGHSA enrichment
  29. 2026-05-19 21:13 UTCVendor advisory
  30. 2026-05-19 21:13 UTCGHSA enrichment
  31. 2026-05-19 16:59 UTCVendor advisory
  32. 2026-05-19 16:59 UTCGHSA enrichment
  33. 2026-05-19 12:46 UTCVendor advisory
  34. 2026-05-19 12:46 UTCGHSA enrichment
  35. 2026-05-19 08:33 UTCVendor advisory
  36. 2026-05-19 08:33 UTCGHSA enrichment
  37. 2026-05-19 04:21 UTCVendor advisory
  38. 2026-05-19 04:20 UTCGHSA enrichment
  39. 2026-05-19 00:08 UTCEG score recompute
  40. 2026-05-19 00:08 UTCVendor advisory
  41. 2026-05-19 00:08 UTCGHSA enrichment
  42. 2026-05-18 21:30 UTCEPSS rescore
  43. 2026-05-18 21:30 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-42942✓ verified
    First seen Oct 2, 2017

    Dnsmasq < 2.78 - Heap Overflow

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2017-14492?
CVE-2017-14492 is a critical vulnerability published on October 3, 2017. Heap-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted IPv6 router advertisement request.
When was CVE-2017-14492 disclosed?
CVE-2017-14492 was first published in the National Vulnerability Database on October 3, 2017, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-14492 actively exploited?
CVE-2017-14492 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 93% probability of exploitation in the next 30 days, which ranks it in the top 0.2% of all scored CVEs.
What is the CVSS score of CVE-2017-14492?
CVE-2017-14492 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2017-14492?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-14492, 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.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2017-14492

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