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CVE-2019-25076
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…
Medium5.8EPSS 2.4%
- Published
- Updated
- Reserved
- Assigned by
- mitre
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L |
- EPSS (exploitation in 30 days)
- 2.4% · top 16% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.8.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (5)
- https://sites.google.com/view/tuple-space-explosion (opens in a new tab)x_refsource_MISCx_transferred
- https://dl.acm.org/citation.cfm?doid=3359989.3365431 (opens in a new tab)x_refsource_MISCx_transferred
- https://arxiv.org/abs/2011.09107 (opens in a new tab)x_refsource_MISCx_transferred
- https://www.youtube.com/watch?v=DSC3m-Bww64 (opens in a new tab)x_refsource_MISCx_transferred
- https://www.youtube.com/watch?v=5cHpzVK0D28 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2019-25076)Record last updated .