CVE-2017-12995

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 2.4% (83rd percentile of EPSS-scored CVEs). GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2.4%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

The DNS parser in tcpdump before 4.9.2 could enter an infinite loop due to a bug in print-domain.c:ns_print().

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
60
EG Risk 60/100CISA 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
Severity98% × 45%
Exploitation2% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
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
2.4%
EPSS %ILE
83rd
KEV
Not listed

CISA SSVCTrack 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 total (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

September 14, 2017

Last Modified

June 17, 2026

Advisory Details (6)

Auto-updated Sep 29, 2026
Patch available. Sources: redhat, github_commit.
generic

[SECURITY] [DSA 3971-1] tcpdump security update

http://www.debian.org/security/2017/dsa-3971
generic

About the security content of macOS High Sierra 10.13.1, Security Update 2017-001 Sierra, and Security Update 2017-004 El Capitan - Apple Support

https://support.apple.com/HT208221
generic

Tcpdump: Multiple vulnerabilities (GLSA 201709-23) — Gentoo security

https://security.gentoo.org/glsa/201709-23
github_commit

commit 3a76fd7c95fc (the-tcpdump-group/tcpdump)

Fix landed in the-tcpdump-group/tcpdump commit 3a76fd7c95fc — awaiting tagged release

https://github.com/the-tcpdump-group/tcpdump/commit/3a76fd7c95fced2c2f8c8148a9055c3a542eff29
redhat Patch Available

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHEA-2018:0705
generic
http://www.securitytracker.com/id/1039307

Patch Availability(3)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntutcpdump (4.9.2-0ubuntu0.12.04.1) @ precise2026-05-19ubuntu
ubuntutcpdump (4.9.2-0ubuntu0.17.04.2) @ zesty2026-05-19ubuntu
redhattcpdump-14:4.9.2-3.el72018-04-10redhat

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)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
tcpdump—
  • every version up to 4.9.2-1: fixed in 4.9.2-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
tcpdump—
  • every version up to 4.9.2-1: fixed in 4.9.2-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
tcpdump—
  • every version up to 4.9.2-1: fixed in 4.9.2-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
tcpdump—
  • every version up to 4.9.2-1: fixed in 4.9.2-1
—
Debian:7(1)
PackageVulnerable rangeFix by version rangeDependents
tcpdump4.3.0-1 ... 4.9.1-3 (30 versions)
  • every version up to 4.9.2-1~deb7u1: fixed in 4.9.2-1~deb7u1
—
Debian:8(1)
PackageVulnerable rangeFix by version rangeDependents
tcpdump4.6.2-5 ... 4.9.2-1~deb7u1 (19 versions)
  • every version up to 4.9.2-1~deb8u1: fixed in 4.9.2-1~deb8u1
—
Debian:9(1)
PackageVulnerable rangeFix by version rangeDependents
tcpdump4.9.0-2 ... 4.9.2-1~deb8u1 (7 versions)
  • every version up to 4.9.2-1~deb9u1: fixed in 4.9.2-1~deb9u1
—

Weakness Classification(2)

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

All Vendor Advisories

(3)

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 6× in last 7d / 20× 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 155 total refreshes for this CVE.

  1. 2026-10-05 17:38 UTCEPSS rescore
  2. 2026-10-04 23:18 UTCEPSS rescore
  3. 2026-10-03 14:21 UTCEPSS rescore
  4. 2026-10-02 23:40 UTCOSV refresh
  5. 2026-09-30 14:58 UTCEPSS rescore
  6. 2026-09-30 09:25 UTCEG score recompute
  7. 2026-09-28 13:45 UTCEPSS rescore
  8. 2026-09-27 13:40 UTCEPSS rescore
  9. 2026-09-26 15:53 UTCEPSS rescore
  10. 2026-09-24 13:59 UTCEPSS rescore
  11. 2026-09-19 15:36 UTCEPSS rescore
  12. 2026-09-18 19:22 UTCEPSS rescore
  13. 2026-09-17 19:22 UTCEPSS rescore
  14. 2026-09-15 03:05 UTCEPSS rescore
  15. 2026-09-13 21:09 UTCOSV refresh
  16. 2026-09-13 16:42 UTCEPSS rescore
  17. 2026-09-12 14:55 UTCEPSS rescore
  18. 2026-09-11 09:31 UTCEPSS rescore
  19. 2026-09-10 09:26 UTCEPSS rescore
  20. 2026-09-07 15:56 UTCEPSS rescore
  21. 2026-09-04 13:56 UTCEPSS rescore
  22. 2026-09-04 05:01 UTCEPSS rescore
  23. 2026-09-02 14:07 UTCEPSS rescore
  24. 2026-09-01 13:48 UTCEPSS rescore
  25. 2026-09-01 03:31 UTCEPSS rescore
Show 75 more
  1. 2026-08-30 19:13 UTCEPSS rescore
  2. 2026-08-28 21:36 UTCEPSS rescore
  3. 2026-08-27 14:20 UTCEPSS rescore
  4. 2026-08-26 14:41 UTCEPSS rescore
  5. 2026-08-25 22:39 UTCOSV refresh
  6. 2026-08-25 13:44 UTCEPSS rescore
  7. 2026-08-24 14:10 UTCEPSS rescore
  8. 2026-08-21 23:44 UTCEPSS rescore
  9. 2026-08-20 22:50 UTCEPSS rescore
  10. 2026-08-19 16:59 UTCEPSS rescore
  11. 2026-08-18 13:43 UTCEPSS rescore
  12. 2026-08-17 13:42 UTCEPSS rescore
  13. 2026-08-16 14:51 UTCEPSS rescore
  14. 2026-08-16 02:10 UTCEPSS rescore
  15. 2026-08-15 01:26 UTCEPSS rescore
  16. 2026-08-13 21:56 UTCEPSS rescore
  17. 2026-08-09 15:10 UTCOSV refresh
  18. 2026-08-08 16:32 UTCEPSS rescore
  19. 2026-08-07 16:22 UTCEPSS rescore
  20. 2026-08-06 13:42 UTCEPSS rescore
  21. 2026-08-05 19:12 UTCEPSS rescore
  22. 2026-08-04 15:05 UTCEPSS rescore
  23. 2026-08-04 10:32 UTCEPSS rescore
  24. 2026-08-03 10:30 UTCEPSS rescore
  25. 2026-08-02 02:23 UTCEPSS rescore
  26. 2026-08-01 04:11 UTCEPSS rescore
  27. 2026-07-30 16:24 UTCEPSS rescore
  28. 2026-07-30 01:26 UTCEPSS rescore
  29. 2026-07-28 15:32 UTCEPSS rescore
  30. 2026-07-26 14:51 UTCEPSS rescore
  31. 2026-07-25 14:13 UTCEPSS rescore
  32. 2026-07-24 15:41 UTCOSV refresh
  33. 2026-07-23 14:15 UTCEPSS rescore
  34. 2026-07-23 01:26 UTCEG score recompute
  35. 2026-07-22 22:05 UTCEG score recompute▲ 2.30
  36. 2026-07-22 14:04 UTCEPSS rescore
  37. 2026-07-21 15:21 UTCEPSS rescore
  38. 2026-07-21 15:21 UTCEPSS rescore
  39. 2026-07-20 17:04 UTCEPSS rescore
  40. 2026-07-20 17:04 UTCEPSS rescore
  41. 2026-07-19 14:28 UTCEPSS rescore
  42. 2026-07-19 14:28 UTCEPSS rescore
  43. 2026-07-19 02:26 UTCEPSS rescore
  44. 2026-07-19 02:26 UTCEPSS rescore
  45. 2026-07-18 10:00 UTCEPSS rescore
  46. 2026-07-16 16:59 UTCEPSS rescore
  47. 2026-07-16 16:59 UTCEPSS rescore
  48. 2026-07-15 16:54 UTCEPSS rescore
  49. 2026-07-15 16:54 UTCEPSS rescore
  50. 2026-07-15 01:56 UTCEPSS rescore
  51. 2026-07-13 22:26 UTCEPSS rescore
  52. 2026-07-13 06:09 UTCEPSS rescore
  53. 2026-07-12 05:43 UTCEPSS rescore
  54. 2026-07-11 08:24 UTCEPSS rescore
  55. 2026-07-09 19:06 UTCEPSS rescore
  56. 2026-07-08 15:10 UTCEPSS rescore
  57. 2026-07-07 13:42 UTCEPSS rescore
  58. 2026-07-07 11:21 UTCOSV refresh
  59. 2026-07-06 16:24 UTCEPSS rescore
  60. 2026-07-06 02:20 UTCEPSS rescore
  61. 2026-07-05 02:27 UTCEPSS rescore
  62. 2026-07-04 06:28 UTCEPSS rescore
  63. 2026-07-01 15:02 UTCEPSS rescore
  64. 2026-07-01 15:02 UTCEPSS rescore
  65. 2026-06-30 23:19 UTCEPSS rescore
  66. 2026-06-30 23:19 UTCEPSS rescore
  67. 2026-06-28 14:04 UTCEPSS rescore
  68. 2026-06-28 04:53 UTCEPSS rescore
  69. 2026-06-27 03:05 UTCEPSS rescore
  70. 2026-06-25 13:47 UTCEPSS rescore
  71. 2026-06-25 13:47 UTCEPSS rescore
  72. 2026-06-24 14:02 UTCEPSS rescore
  73. 2026-06-23 21:30 UTCEPSS rescore
  74. 2026-06-22 14:23 UTCEPSS rescore
  75. 2026-06-22 14:23 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2017-12995?
CVE-2017-12995 is a critical vulnerability published on September 14, 2017. The DNS parser in tcpdump before 4.9.2 could enter an infinite loop due to a bug in print-domain.c:ns_print().
When was CVE-2017-12995 disclosed?
CVE-2017-12995 was first published on September 14, 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-2017-12995 actively exploited?
CVE-2017-12995 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.4% probability of exploitation in the next 30 days (83rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2017-12995?
CVE-2017-12995 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2017-12995?
A fix for CVE-2017-12995 is available: update to the fixed version the vendor names in its advisory.

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