HOMEVULNERABILITIESCVE-2019-25076
MEDIUM

CVE-2019-25076

NVD-CWE-noinfoPublished: September 8, 2022· Updated: Jun 17, 2026

5.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2019-25076 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeChanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

Affected Vendors & Products

openvswitch1 product(s)
openvswitch
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://arxiv.org/abs/2011.09107
ADVISORYhttps://dl.acm.org/citation.cfm?doid=3359989.3365431
ADVISORYhttps://sites.google.com/view/tuple-space-explosion
ADVISORYhttps://www.youtube.com/watch?v=5cHpzVK0D28
ADVISORYhttps://www.youtube.com/watch?v=DSC3m-Bww64
ADVISORYhttps://arxiv.org/abs/2011.09107
ADVISORYhttps://dl.acm.org/citation.cfm?doid=3359989.3365431
ADVISORYhttps://sites.google.com/view/tuple-space-explosion
ADVISORYhttps://www.youtube.com/watch?v=5cHpzVK0D28
ADVISORYhttps://www.youtube.com/watch?v=DSC3m-Bww64

All References (10)

→
https://arxiv.org/abs/2011.09107Third Party Advisory
→
https://dl.acm.org/citation.cfm?doid=3359989.3365431Third Party Advisory
→
https://sites.google.com/view/tuple-space-explosionExploit · Third Party Advisory
→
https://www.youtube.com/watch?v=5cHpzVK0D28Exploit · Third Party Advisory
→
https://www.youtube.com/watch?v=DSC3m-Bww64Exploit · Third Party Advisory
→
https://arxiv.org/abs/2011.09107Third Party Advisory
→
https://dl.acm.org/citation.cfm?doid=3359989.3365431Third Party Advisory
→
https://sites.google.com/view/tuple-space-explosionExploit · Third Party Advisory
→
https://www.youtube.com/watch?v=5cHpzVK0D28Exploit · Third Party Advisory
→
https://www.youtube.com/watch?v=DSC3m-Bww64Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2019-25076
CVSS Score5.8 / 10
SeverityMEDIUM
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected1 vendor(s)
PublishedSep 8, 2022

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CVE-2012-5692
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CVE-2009-1443
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Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-25076 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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