CVE-2019-25076: openvswitch
Vulnerability summary
CVE-2019-25076 is a medium (CVSS 5.8) vulnerability in openvswitch. EPSS estimates a 2.41% chance of exploitation in the next 30 days, higher than 84.1% of scored vulnerabilities. 3 public exploits are recorded.
Not severe (CVSS 5.8, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Timeline
- 08-09-2022PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
The TSS (Tuple Space Search) algorithm in Open vSwitch 2.x through 2.17.2 and 3.0.0 allows remote attackers to cause a denial of service (delays of legitimate traffic) via crafted packet data that requires excessive evaluation time within the packet classification algorithm for the MegaFlow cache, aka a Tuple Space Explosion (TSE) attack.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.8MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
- OSV · DebianEcosystem advisory · calculated5.8MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
EPSS trend
Probability
2.41%
Chance of exploitation in the next 30 days
Percentile
84%
Versus all other CVEs
30-day change
Increase +0.07 pp
From 2.34% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
3 foundExploit Reference (sites.google.com)
Maturity: unknown
Exploit Reference (youtube.com)
Maturity: unknown
Exploit Reference (youtube.com)
Maturity: unknown
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- openvswitchAll versions (No fix recorded)
Openvswitch1 product
- openvswitch≥ 2.0.0, ≤ 2.17.2 | 3.0.0
Ubuntu1 product
- openvswitchAll versions (No fix recorded)
3 vendors · 3 products
