6.5

CVE-2019-5892: frrouting Interpretation Conflict

CVSS: 6.5v3.0MediumModified
Published 10-01-2019Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2019-5892 is a medium (CVSS 6.5) Interpretation Conflict vulnerability in frrouting. EPSS estimates a 2.72% chance of exploitation in the next 30 days, higher than 85.8% of scored vulnerabilities.

Overall risk
27/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.0 (NVD)
EPSS score
2.72%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 10-01-2019
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

bgpd in FRRouting FRR (aka Free Range Routing) 2.x and 3.x before 3.0.4, 4.x before 4.0.1, 5.x before 5.0.2, and 6.x before 6.0.2 (not affecting Cumulus Linux or VyOS), when ENABLE_BGP_VNC is used for Virtual Network Control, allows remote attackers to cause a denial of service (peering session flap) via attribute 255 in a BGP UPDATE packet. This occurred during Disco in January 2019 because FRR does not implement RFC 7606, and therefore the packets with 255 were considered invalid VNC data and the BGP session was closed.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

2.72%

Chance of exploitation in the next 30 days

Percentile

86%

Versus all other CVEs

30-day change

0.00 pp

From 2.72% on 20-09-2026

20-09-202620-10-2026
EPSS score
2.72%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Frrouting1 product
  • frrouting≥ 2.0, ≤ 2.0.2 | ≥ 3.0, < 3.0.4 | ≥ 5.0, < 5.0.2 | ≥ 6.0, < 6.0.2 | 4.0

1 vendor · 1 product

References

7 links