CVE-2018-1111

CRITICALNVD 7.59.0
EchelonGraph scoreHIGH confidence

“▲” beside the score: it is higher than NVD's CVSS score.

Score elevated to 9.0 because EPSS predicted 98% probability of exploitation within the next 30 days (99th percentile of EPSS-scored CVEs) when EchelonGraph scored this CVE. NVD baseline CVSS 7.5 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction (continuous uplift above 30%)
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 4 sources updated this weekWeaponized
9.0EG
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 exploitation likelihood — EPSS 98%
  • Public exploit code is available (Metasploit, Exploit-DB, marked verified by Exploit-DB, other public proof-of-concept code)
CISA-KEV: Not listedEPSS PROB: 98%CVSS: 7.5Exploit: Metasploit · Exploit-DB (verified) · other public PoCExposed services: Not assessed

A fix is available — apply it.

DHCP packages in Red Hat Enterprise Linux 6 and 7, Fedora 28, and earlier are vulnerable to a command injection flaw in the NetworkManager integration script included in the DHCP client. A malicious DHCP server, or an attacker on the local network able to spoof DHCP responses, could use this flaw to execute arbitrary commands with root privileges on systems using NetworkManager and configured to obtain network configuration using the DHCP protocol.

CVSS v3
7.5
EG Score
9.0CRITICALhigh confidence
EG Risk
73
EG Risk 73/100

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.
Exploitation98% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from 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
98%
EPSS %ILE
99th
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 (9.0): severity, escalated by confirmed exploitation. This CVE's 9.0 is EPSS's lift toward 9.0 from its impact severity (EG Severity, CVSS 7.5 HIGH): a likelihood of exploitation, not impact.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
98% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-21). 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, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade 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, Track* at medium and Attend at high mission impact.

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

Exploitation public PoC (exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from 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; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” 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

May 17, 2018

Last Modified

November 21, 2024

Advisory Details (9)

Auto-updated Oct 14, 2026
Patch available. Sources: redhat.
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 6.5 Advanced Update Support.

https://access.redhat.com/errata/RHSA-2018:1460
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 6.6 Advanced Update Support and Red Hat Enterprise Linux 6.6 Telco Extended Update Support.

https://access.redhat.com/errata/RHSA-2018:1459
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 6.7 Extended Update Support.

https://access.redhat.com/errata/RHSA-2018:1458
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 7.2 Advanced Update Support, Red Hat Enterprise Linux 7.2 Telco Extended Update Support, and Red Hat

https://access.redhat.com/errata/RHSA-2018:1457
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 7.3 Extended Update Support.

https://access.redhat.com/errata/RHSA-2018:1456
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 7.4 Extended Update Support.

https://access.redhat.com/errata/RHSA-2018:1455
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 6.

https://access.redhat.com/errata/RHSA-2018:1454
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2018:1453
Web page

CVE-2018-1111 - PSIRT.COM

http://www.securityfocus.com/bid/104195

Vendor Advisories for CVE-2018-1111(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(11)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatdhcp-12:4.1.1-34.P1.el6_4.22018-05-15redhat
redhatdhcp-12:4.1.1-43.P1.el6_6.22018-05-15redhat
redhatdhcp-12:4.2.5-68.el7_5.12018-05-15redhat
redhatdhcp-12:4.1.1-49.P1.el6_7.12018-05-15redhat
redhatdhcp-12:4.2.5-47.el7_3.12018-05-15redhat
redhatdhcp-12:4.2.5-58.el7_4.42018-05-15redhat
redhatdhcp-12:4.2.5-42.el7_2.12018-05-15redhat
redhatdhcp-12:4.1.1-38.P1.el6_5.12018-05-15redhat
redhatredhat-virtualization-host-0:4.2-20180508.02018-05-15redhat
redhatrhvm-appliance-0:4.2-20180504.02018-05-15redhat
redhatdhcp-12:4.1.1-53.P1.el6_9.42018-05-15redhat

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.

Weakness Classification(2)

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

Additional Vendor Advisories

(10)

Data Freshness Timeline

(refreshed 19× in last 7d / 35× 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.

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. 15 repeat rows among the latest 81 are merged into the row they repeat.

  1. 2026-10-22 16:24 UTCEG score recompute
  2. 2026-10-22 16:24 UTCVendor advisory
  3. 2026-10-22 16:24 UTCGHSA enrichmentGHSA-5jw9-5ff9-vr5p · GitHub severity HIGH · GitHub CVSS 7.5
  4. 2026-10-21 16:27 UTCEPSS rescoreEPSS 98% · 99th percentile
  5. 2026-10-21 15:13 UTCEG score recompute
  6. 2026-10-21 15:13 UTCVendor advisory
  7. 2026-10-21 15:13 UTCGHSA enrichmentGHSA-5jw9-5ff9-vr5p · GitHub severity HIGH · GitHub CVSS 7.5
  8. 2026-10-20 14:45 UTCEG score recompute
  9. 2026-10-20 14:45 UTCVendor advisory
  10. 2026-10-20 14:44 UTCGHSA enrichmentGHSA-5jw9-5ff9-vr5p · GitHub severity HIGH · GitHub CVSS 7.5
  11. 2026-10-19 13:48 UTCEG score recompute
  12. 2026-10-19 13:48 UTCVendor advisory
  13. 2026-10-19 13:48 UTCGHSA enrichmentGHSA-5jw9-5ff9-vr5p · GitHub severity HIGH · GitHub CVSS 7.5
  14. 2026-10-18 13:17 UTCVendor advisory
  15. 2026-10-18 13:17 UTCGHSA enrichmentGHSA-5jw9-5ff9-vr5p · GitHub severity HIGH · GitHub CVSS 7.5
  16. 2026-10-18 10:22 UTCEG score recompute
  17. 2026-10-17 12:46 UTCEG score recompute
  18. 2026-10-17 12:46 UTCVendor advisory
  19. 2026-10-17 12:46 UTCGHSA enrichmentGHSA-5jw9-5ff9-vr5p · GitHub severity HIGH · GitHub CVSS 7.5
  20. 2026-10-16 12:17 UTCEG score recompute
  21. 2026-10-16 12:17 UTCVendor advisory
  22. 2026-10-16 12:16 UTCGHSA enrichmentGHSA-5jw9-5ff9-vr5p · GitHub severity HIGH · GitHub CVSS 7.5
  23. 2026-10-15 11:48 UTCEG score recompute
  24. 2026-10-15 11:48 UTCVendor advisory
  25. 2026-10-15 11:48 UTCGHSA enrichmentGHSA-5jw9-5ff9-vr5p · GitHub severity HIGH · GitHub CVSS 7.5
Show 41 more
  1. 2026-10-14 16:27 UTCEPSS rescoreEPSS 98% · 99th percentile
  2. 2026-10-14 07:17 UTCEG score recompute
  3. 2026-10-14 07:17 UTCVendor advisory
  4. 2026-10-14 07:17 UTCGHSA enrichmentGHSA-5jw9-5ff9-vr5p · GitHub severity HIGH · GitHub CVSS 7.5
  5. 2026-10-13 02:34 UTCVendor advisory
  6. 2026-10-13 02:33 UTCGHSA enrichmentGHSA-5jw9-5ff9-vr5p · GitHub severity HIGH · GitHub CVSS 7.5
  7. 2026-10-12 20:21 UTCEG score recompute
  8. 2026-10-12 00:44 UTCEG score recompute
  9. 2026-10-06 15:12 UTCEPSS rescoreEPSS 98% · 99th percentile
  10. 2026-09-30 09:51 UTCEG score recompute
  11. 2026-09-15 03:05 UTCEPSS rescoreEPSS 98% · 99th percentile
  12. 2026-09-06 13:43 UTCEPSS rescoreEPSS 98% · 99th percentile
  13. 2026-09-05 15:24 UTCEPSS rescoreEPSS 98% · 99th percentile
  14. 2026-08-28 21:36 UTCEPSS rescoreEPSS 98% · 99th percentile
  15. 2026-08-25 13:44 UTCEPSS rescoreEPSS 98% · 99th percentile
  16. 2026-08-16 02:10 UTCEPSS rescoreEPSS 98% · 99th percentile
  17. 2026-08-12 13:46 UTCEPSS rescoreEPSS 98% · 99th percentile
  18. 2026-07-24 14:14 UTCEPSS rescoreEPSS 98% · 99th percentile
  19. 2026-07-23 01:32 UTCEG score recompute
  20. 2026-07-22 22:12 UTCEG score recompute
  21. 2026-07-15 16:55 UTCEPSS rescoreEPSS 98% · 99th percentile
  22. 2026-07-13 06:10 UTCEPSS rescoreEPSS 94% · 99th percentile
  23. 2026-07-01 15:03 UTCEPSS rescoreEPSS 94% · 99th percentile
  24. 2026-06-24 14:02 UTCEPSS rescoreEPSS 94% · 99th percentile
  25. 2026-06-23 21:30 UTCEPSS rescoreEPSS 94% · 99th percentile
  26. 2026-06-17 17:50 UTCEPSS rescoreEPSS 94% · 99th percentile
  27. 2026-06-15 17:45 UTCEPSS rescoreEPSS 94% · 99th percentile
  28. 2026-06-14 23:14 UTCEPSS rescoreEPSS 88% · 99th percentile
  29. 2026-06-12 23:09 UTCEPSS rescoreEPSS 88% · 99th percentile
  30. 2026-06-10 22:16 UTCEPSS rescoreEPSS 88% · 99th percentile
  31. 2026-06-10 13:19 UTCEPSS rescoreEPSS 88% · 99th percentile
  32. 2026-06-06 13:45 UTCEPSS rescoreEPSS 88% · 99th percentile
  33. 2026-06-05 22:45 UTCEPSS rescoreEPSS 88% · 99th percentile
  34. 2026-06-05 06:08 UTCEPSS rescoreEPSS 88% · 99th percentile
  35. 2026-06-01 13:50 UTCEPSS rescoreEPSS 88% · 99th percentile
  36. 2026-05-29 13:41 UTCEPSS rescoreEPSS 88% · 99th percentile
  37. 2026-05-28 13:42 UTCEPSS rescoreEPSS 88% · 99th percentile
  38. 2026-05-28 08:02 UTCEG score recompute
  39. 2026-05-28 08:02 UTCVendor advisory
  40. 2026-05-28 08:02 UTCGHSA enrichmentGHSA-5jw9-5ff9-vr5p · GitHub severity HIGH · GitHub CVSS 7.5
  41. 2026-05-26 07:17 UTCEPSS rescoreEPSS 88% · 99th percentile

Publicly available exploits

(5 references)

Public exploit code is referenced for this CVE (1 Metasploit module, 2 Exploit-DB entries, 2 GitHub PoCs). Defenders should treat patch urgency accordingly.

  • Exploit-DBEDB-44890✓ verified
    Published Jun 13, 2018

    DHCP Client - Command Injection 'DynoRoot' (Metasploit)

    Open source ↗
  • Metasploitexploit/unix/dhcp/rhel_dhcp_client_command_injection✓ verified
    Published Jun 12, 2018

    DHCP Client Command Injection (DynoRoot)

    Open source ↗
  • Exploit-DBEDB-44652✓ verified
    Published May 18, 2018

    DynoRoot DHCP Client - Command Injection

    Open source ↗
  • GitHub PoCkkirsche/CVE-2018-1111
    Published May 18, 2018

    CVE-2018-1111 DynoRoot

    Open source ↗
  • GitHub PoCknqyf263/CVE-2018-1111
    Published May 17, 2018

    Environment for DynoRoot (CVE-2018-1111)

    Open source ↗

Frequently asked(5)

What is CVE-2018-1111?
CVE-2018-1111 is a critical-severity vulnerability; its CVE record was published on May 17, 2018. DHCP packages in Red Hat Enterprise Linux 6 and 7, Fedora 28, and earlier are vulnerable to a command injection flaw in the NetworkManager integration script included in the DHCP client. A malicious DHCP server, or an attacker on the local network able to spoof DHCP responses, could use this flaw…
When was CVE-2018-1111 made public?
CVE-2018-1111 was made public on May 15, 2018: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on May 17, 2018. EchelonGraph's copy of the record carries a last-modified date of November 21, 2024; the record at its source may have been updated since.
Is CVE-2018-1111 actively exploited?
CVE-2018-1111 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model places it in Tier 2 (Weaponized), which is not evidence of exploitation: a Metasploit module exists for it, and Exploit-DB marks a public exploit for it as verified. EchelonGraph does not test whether exploit code works. FIRST EPSS estimates a 98% probability of exploitation in the next 30 days (99th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2018-1111?
CVE-2018-1111 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0 (CRITICAL).
How do I remediate CVE-2018-1111?
A fix for CVE-2018-1111 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2018-1111 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2018-1111

Explore →

Is Your Infrastructure Affected by CVE-2018-1111?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.