CVE-2017-12995

CRITICALNVD 9.89.8
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 2.4% (84th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 7.5 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 2022-05-13) is not newer than that change (2026-06-17), so it does not.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3

Also known asEUVD-2017-4513 (ENISA EUVD) · GHSA-fm82-qvr8-64ww (GitHub Security Advisories)Source: ENISA EUVD

9.8EG
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: 2.4%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 60/100

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)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation2.4% × 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 total (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
2.4%
EPSS %ILE
84th
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 (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
2.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). 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: 3 days if the affected system is publicly exposed; 60 days 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; 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). 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)3 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (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 14, 2017

Last Modified

June 17, 2026

Advisory Details (6)

Auto-updated Oct 6, 2026
Patch available. Sources: redhat, github_commit.
Web page

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

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

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
Web page

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
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHEA-2018:0705

Patch Availability(3)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntutcpdump (4.9.2-0ubuntu0.12.04.1) @ precise2026-11-03ubuntu
ubuntutcpdump (4.9.2-0ubuntu0.16.04.1) @ xenial2026-11-03ubuntu
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 21× in last 7d / 73× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 260 rows 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 160 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-12 19:01 UTCEchelonGraph re-scored
  2. 2026-11-12 19:01 UTCVendor advisory
  3. 2026-11-12 19:01 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  4. 2026-11-12 16:27 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  5. 2026-11-11 17:11 UTCEchelonGraph re-scored
  6. 2026-11-11 17:11 UTCVendor advisory
  7. 2026-11-11 17:11 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  8. 2026-11-11 16:29 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  9. 2026-11-10 16:31 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  10. 2026-11-10 15:22 UTCEchelonGraph re-scored
  11. 2026-11-10 15:22 UTCVendor advisory
  12. 2026-11-10 15:22 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  13. 2026-11-09 16:27 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  14. 2026-11-09 13:33 UTCEchelonGraph re-scored
  15. 2026-11-09 13:33 UTCVendor advisory
  16. 2026-11-09 13:33 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  17. 2026-11-08 16:29 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  18. 2026-11-08 11:44 UTCEchelonGraph re-scored
  19. 2026-11-08 11:44 UTCVendor advisory
  20. 2026-11-08 11:44 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  21. 2026-11-07 16:30 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  22. 2026-11-07 09:54 UTCEchelonGraph re-scored
  23. 2026-11-07 09:54 UTCVendor advisory
  24. 2026-11-07 09:54 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  25. 2026-11-06 16:28 UTCEPSS rescoreEPSS 2.4% · 84th percentile
Show 75 more
  1. 2026-11-06 08:05 UTCEchelonGraph re-scored
  2. 2026-11-06 08:05 UTCVendor advisory
  3. 2026-11-06 08:05 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  4. 2026-11-05 16:27 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  5. 2026-11-05 06:15 UTCEchelonGraph re-scored
  6. 2026-11-05 06:15 UTCVendor advisory
  7. 2026-11-05 06:15 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  8. 2026-11-04 16:28 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  9. 2026-11-04 04:25 UTCEchelonGraph re-scored
  10. 2026-11-04 04:25 UTCVendor advisory
  11. 2026-11-04 04:25 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  12. 2026-11-03 16:33 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  13. 2026-11-03 02:30 UTCEchelonGraph re-scored
  14. 2026-11-03 02:30 UTCVendor advisory
  15. 2026-11-03 02:30 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  16. 2026-11-02 16:34 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  17. 2026-11-02 14:25 UTCOSV refresh
  18. 2026-11-02 00:40 UTCEchelonGraph re-scored
  19. 2026-11-02 00:40 UTCVendor advisory
  20. 2026-11-02 00:40 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  21. 2026-11-01 16:28 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  22. 2026-10-31 22:51 UTCEchelonGraph re-scored
  23. 2026-10-31 22:51 UTCVendor advisory
  24. 2026-10-31 22:51 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  25. 2026-10-31 16:27 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  26. 2026-10-30 21:02 UTCEchelonGraph re-scored
  27. 2026-10-30 21:02 UTCVendor advisory
  28. 2026-10-30 21:02 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  29. 2026-10-30 16:27 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  30. 2026-10-29 19:13 UTCEchelonGraph re-scored
  31. 2026-10-29 19:13 UTCVendor advisory
  32. 2026-10-29 19:13 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  33. 2026-10-29 16:27 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  34. 2026-10-28 17:24 UTCEchelonGraph re-scored
  35. 2026-10-28 17:24 UTCVendor advisory
  36. 2026-10-28 17:23 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  37. 2026-10-28 16:27 UTCEPSS rescoreEPSS 2.4% · 84th percentile
  38. 2026-10-27 16:26 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  39. 2026-10-27 15:31 UTCEchelonGraph re-scored
  40. 2026-10-27 15:31 UTCVendor advisory
  41. 2026-10-27 15:31 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  42. 2026-10-26 16:26 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  43. 2026-10-26 13:21 UTCVendor advisory
  44. 2026-10-26 13:21 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  45. 2026-10-25 19:39 UTCEchelonGraph re-scored
  46. 2026-10-25 16:27 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  47. 2026-10-25 11:20 UTCEchelonGraph re-scored
  48. 2026-10-25 11:20 UTCVendor advisory
  49. 2026-10-25 11:20 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  50. 2026-10-24 16:27 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  51. 2026-10-24 09:31 UTCEchelonGraph re-scored
  52. 2026-10-24 09:31 UTCVendor advisory
  53. 2026-10-24 09:31 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  54. 2026-10-23 16:26 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  55. 2026-10-23 07:42 UTCEchelonGraph re-scored
  56. 2026-10-23 07:42 UTCVendor advisory
  57. 2026-10-23 07:42 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  58. 2026-10-22 16:27 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  59. 2026-10-22 05:52 UTCEchelonGraph re-scored
  60. 2026-10-22 05:52 UTCVendor advisory
  61. 2026-10-22 05:52 UTCGHSA enrichmentGHSA-fm82-qvr8-64ww · GitHub severity HIGH · GitHub CVSS 7.5
  62. 2026-10-21 16:27 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  63. 2026-10-20 16:27 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  64. 2026-10-19 16:26 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  65. 2026-10-18 16:26 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  66. 2026-10-18 10:40 UTCEchelonGraph re-scored
  67. 2026-10-17 16:27 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  68. 2026-10-16 16:29 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  69. 2026-10-15 16:26 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  70. 2026-10-14 16:27 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  71. 2026-10-13 16:27 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  72. 2026-10-12 20:35 UTCEchelonGraph re-scored
  73. 2026-10-12 16:28 UTCEPSS rescoreEPSS 2.4% · 83rd percentile
  74. 2026-10-12 00:58 UTCEchelonGraph re-scored
  75. 2026-10-11 13:40 UTCEPSS rescoreEPSS 2.4% · 83rd percentile

Frequently asked(5)

What is CVE-2017-12995?
CVE-2017-12995 is a critical-severity vulnerability; its CVE record was 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 made public?
CVE-2017-12995 was made public on September 14, 2017: that is the date its CVE record's CNA, MITRE Corporation, gives for when the vulnerability was made public. The CVE record itself was published on September 14, 2017. EchelonGraph's copy of the record carries a last-modified date of June 17, 2026; the record at its source may have been updated since.
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 (84th 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.

Dependency Blast Radius

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