CVE-2018-15466

MEDIUMNVD 5.35.3
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 1.9% (79th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 3.7 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 (2024-11-21), so it does not.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
5.3EG
EchelonGraph verdictMonitorRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1.9%CVSS: 5.3Exploit: None knownExposed services: Not assessed

No fix has been recorded since the CVE record was published in 2019 — use a compensating control (WAF / firewall / segmentation) and check the vendor's advisory.

A vulnerability in the Graphite web interface of the Policy and Charging Rules Function (PCRF) of Cisco Policy Suite (CPS) could allow an unauthenticated, remote attacker to access the Graphite web interface. The attacker would need to have access to the internal VLAN where CPS is deployed. The vulnerability is due to lack of authentication. An attacker could exploit this vulnerability by directly connecting to the Graphite web interface. An exploit could allow the attacker to access various statistics and Key Performance Indicators (KPIs) regarding the Cisco Policy Suite environment.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
40
EG Risk 40/100

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 (value × EchelonGraph’s weight)
Severity53% × 45%
The EG Score, 5.3 of 10.
Exploitation1.9% × 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: No fix has been recorded since the CVE record was published in 2019. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and check the vendor's advisory for a fix.
EPSS PROB
1.9%
EPSS %ILE
79th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

No fix has been recorded since the CVE record was published in 2019. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and check the vendor's advisory for a fix.

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

January 11, 2019

Last Modified

November 21, 2024

References (2)

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 28× 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 90 of 154 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. 10 repeat rows among the latest 100 are merged into the row they repeat. The 64 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-12 00:40 UTCEG score recompute
  2. 2026-10-11 13:41 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  3. 2026-10-10 19:55 UTCEPSS rescoreEPSS 1.9% · 79th percentile
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  11. 2026-09-30 14:59 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  12. 2026-09-30 09:54 UTCEG score recompute
  13. 2026-09-28 13:45 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  14. 2026-09-27 13:40 UTCEPSS rescoreEPSS 1.9% · 79th percentile
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  19. 2026-09-21 20:27 UTCEPSS rescoreEPSS 2.1% · 80th percentile
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  1. 2026-09-15 03:05 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  2. 2026-09-13 16:42 UTCEPSS rescoreEPSS 1.9% · 78th percentile
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  8. 2026-09-05 15:24 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  9. 2026-09-04 13:56 UTCEPSS rescoreEPSS 1.9% · 78th percentile
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  16. 2026-08-27 14:21 UTCEPSS rescoreEPSS 1.9% · 78th percentile
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  23. 2026-08-18 13:43 UTCEPSS rescoreEPSS 1.9% · 78th percentile
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  37. 2026-07-30 16:24 UTCEPSS rescoreEPSS 1.9% · 77th percentile
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  40. 2026-07-26 14:51 UTCEPSS rescoreEPSS 1.9% · 77th percentile
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  42. 2026-07-23 14:15 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  43. 2026-07-23 01:33 UTCEG score recompute
  44. 2026-07-22 22:13 UTCEG score recompute▲ 1.60
  45. 2026-07-22 14:04 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  46. 2026-07-21 15:21 UTCEPSS rescoreEPSS 1.9% · 77th percentile
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Frequently asked(5)

What is CVE-2018-15466?
CVE-2018-15466 is a medium-severity vulnerability; its CVE record was published on January 11, 2019. A vulnerability in the Graphite web interface of the Policy and Charging Rules Function (PCRF) of Cisco Policy Suite (CPS) could allow an unauthenticated, remote attacker to access the Graphite web interface. The attacker would need to have access to the internal VLAN where CPS is deployed. The…
When was CVE-2018-15466 made public?
CVE-2018-15466 was made public on January 9, 2019: that is the date its CVE record's CNA, Cisco Systems, Inc., gives for when the vulnerability was made public. The CVE record itself was published on January 11, 2019. 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-2018-15466 actively exploited?
CVE-2018-15466 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.9% probability of exploitation in the next 30 days (79th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2018-15466?
CVE-2018-15466 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2018-15466?
No fix for CVE-2018-15466 has been recorded since its CVE record was published in 2019. Restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and check the vendor's advisory for a fix.

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