CVE-2018-0241

HIGHNVD 7.47.4—
EchelonGraph scoreMEDIUM confidence

Score 7.4 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 7.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.4EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 7.4Exploit: None knownExposed services: Not assessed

No fix has been recorded since the CVE record was published in 2018 — isolate the affected system (restrict network access to it, for example with a firewall, or keep it off the internet) or retire the product.

A vulnerability in the UDP broadcast forwarding function of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on the affected device. The vulnerability is due to improper handling of UDP broadcast packets that are forwarded to an IPv4 helper address. An attacker could exploit this vulnerability by sending multiple UDP broadcast packets to the affected device. An exploit could allow the attacker to cause a buffer leak on the affected device, eventually resulting in a DoS condition requiring manual intervention to recover. This vulnerability affects all Cisco IOS XR platforms running 6.3.1, 6.2.3, or earlier releases of Cisco IOS XR Software when at least one IPv4 helper address is configured on an interface of the device. Cisco Bug IDs: CSCvi35625.

CVSS v3
7.4
EG Score
7.4HIGHmedium confidence
EG Risk
34
EG Risk 34/100

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)
Severity74% × 45%
The EG Score, 7.4 of 10.
Exploitation1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (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 2018. Isolate the affected system within your standard update timelines (restrict network access to it, for example with a firewall, or keep it off the internet) or retire the product.
EPSS PROB
0.8%
EPSS %ILE
56th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

No fix has been recorded since the CVE record was published in 2018. Isolate the affected system within your standard update timelines (restrict network access to it, for example with a firewall, or keep it off the internet) or retire the product.

Exploitation none (CISA Vulnrichment) · Automatable no (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

Published

April 19, 2018

Last Modified

November 21, 2024

References (3)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 24× 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 82 of 141 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. 18 repeat rows among the latest 100 are merged into the row they repeat. The 59 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 13:41 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  2. 2026-10-10 19:55 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  3. 2026-10-09 20:02 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  4. 2026-10-08 16:36 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  5. 2026-10-07 23:41 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  6. 2026-10-06 15:12 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  7. 2026-10-05 17:39 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  8. 2026-10-04 23:18 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  9. 2026-10-03 14:21 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  10. 2026-09-30 14:59 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  11. 2026-09-30 09:49 UTCEG score recompute
  12. 2026-09-28 13:45 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  13. 2026-09-27 13:40 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  14. 2026-09-26 15:53 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  15. 2026-09-26 00:19 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  16. 2026-09-24 13:59 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  17. 2026-09-23 13:42 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  18. 2026-09-21 20:27 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  19. 2026-09-20 20:09 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  20. 2026-09-19 15:36 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  21. 2026-09-17 19:22 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  22. 2026-09-15 03:05 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  23. 2026-09-13 16:42 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  24. 2026-09-12 14:56 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  25. 2026-09-11 09:31 UTCEPSS rescoreEPSS 0.8% · 55th percentile
Show 57 more
  1. 2026-09-07 15:56 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  2. 2026-09-05 15:24 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  3. 2026-09-04 13:56 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  4. 2026-09-04 05:02 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  5. 2026-09-02 14:07 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  6. 2026-09-01 03:31 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  7. 2026-08-30 19:13 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  8. 2026-08-28 21:36 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  9. 2026-08-27 14:21 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  10. 2026-08-26 14:41 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  11. 2026-08-25 13:44 UTCEPSS rescoreEPSS 0.9% · 55th percentile
  12. 2026-08-23 00:14 UTCEPSS rescoreEPSS 0.9% · 55th percentile
  13. 2026-08-21 23:44 UTCEPSS rescoreEPSS 0.9% · 55th percentile
  14. 2026-08-19 16:59 UTCEPSS rescoreEPSS 0.9% · 55th percentile
  15. 2026-08-18 13:43 UTCEPSS rescoreEPSS 0.9% · 55th percentile
  16. 2026-08-16 14:51 UTCEPSS rescoreEPSS 0.9% · 55th percentile
  17. 2026-08-16 02:10 UTCEPSS rescoreEPSS 0.9% · 55th percentile
  18. 2026-08-15 01:26 UTCEPSS rescoreEPSS 0.9% · 55th percentile
  19. 2026-08-12 13:46 UTCEPSS rescoreEPSS 0.9% · 55th percentile
  20. 2026-08-09 13:42 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  21. 2026-08-08 16:32 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  22. 2026-08-07 16:22 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  23. 2026-08-06 13:42 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  24. 2026-08-05 19:13 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  25. 2026-08-02 02:23 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  26. 2026-08-01 04:12 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  27. 2026-07-30 16:24 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  28. 2026-07-30 01:26 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  29. 2026-07-28 15:32 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  30. 2026-07-26 14:51 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  31. 2026-07-23 14:15 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  32. 2026-07-23 01:31 UTCEG score recompute
  33. 2026-07-22 22:11 UTCEG score recompute
  34. 2026-07-22 14:04 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  35. 2026-07-21 15:21 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  36. 2026-07-20 17:04 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  37. 2026-07-19 14:28 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  38. 2026-07-19 02:26 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  39. 2026-07-18 10:01 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  40. 2026-07-16 16:59 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  41. 2026-07-15 16:54 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  42. 2026-07-15 01:56 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  43. 2026-07-13 22:26 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  44. 2026-07-12 05:43 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  45. 2026-07-11 08:24 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  46. 2026-07-09 19:06 UTCEPSS rescoreEPSS 0.9% · 54th percentile
  47. 2026-07-08 15:11 UTCEPSS rescoreEPSS 0.9% · 53rd percentile
  48. 2026-07-07 13:42 UTCEPSS rescoreEPSS 0.9% · 53rd percentile
  49. 2026-07-06 16:24 UTCEPSS rescoreEPSS 0.9% · 53rd percentile
  50. 2026-07-06 02:20 UTCEPSS rescoreEPSS 0.9% · 53rd percentile
  51. 2026-07-05 02:27 UTCEPSS rescoreEPSS 0.9% · 53rd percentile
  52. 2026-07-04 06:28 UTCEPSS rescoreEPSS 0.9% · 53rd percentile
  53. 2026-07-02 16:54 UTCEPSS rescoreEPSS 0.9% · 53rd percentile
  54. 2026-07-01 15:03 UTCEPSS rescoreEPSS 0.9% · 53rd percentile
  55. 2026-06-30 23:19 UTCEPSS rescoreEPSS 0.9% · 53rd percentile
  56. 2026-06-29 14:03 UTCEPSS rescoreEPSS 0.9% · 53rd percentile
  57. 2026-06-28 14:04 UTCEPSS rescoreEPSS 0.9% · 53rd percentile

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2018-0241?
CVE-2018-0241 is a high-severity vulnerability; its CVE record was published on April 19, 2018. A vulnerability in the UDP broadcast forwarding function of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on the affected device. The vulnerability is due to improper handling of UDP broadcast packets that are forwarded to an…
When was CVE-2018-0241 made public?
CVE-2018-0241 was made public on April 19, 2018: 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 April 19, 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-2018-0241 actively exploited?
CVE-2018-0241 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (56th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2018-0241?
CVE-2018-0241 has a CVSS v3 base score of 7.4 (NVD).
How do I remediate CVE-2018-0241?
No fix for CVE-2018-0241 has been recorded since its CVE record was published in 2018, and EchelonGraph holds no vendor advisory for it. Isolate the affected system (restrict network access to it, for example with a firewall, or keep it off the internet) or retire the product.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2018-0241

Explore →

Is Your Infrastructure Affected by CVE-2018-0241?

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

Book a Demo →Browse All CVEs