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CVE-2011-10020

Kaillera 0.86 Server DoS via Malformed UDP Packet

High8.7EPSS 1.3%
Published
Updated
Reserved
Assigned by
VulnCheck

Description

Kaillera Server version 0.86 is vulnerable to a denial-of-service condition triggered by sending a malformed UDP packet after the initial handshake. Once a client sends a valid HELLO0.83 packet and receives a response, any subsequent malformed packet causes the server to crash and become unresponsive. This flaw stems from improper input validation in the server’s UDP packet handler, allowing unauthenticated remote attackers to disrupt service availability.

Scores

CVSS scores of CVE-2011-10020, by who scored it
Scored byCVSSScoreVector
VulnCheckCNA (assigner)4.0High8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
NVDNVD · Deferred4.0High8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS (exploitation in 30 days)
1.3% · top 29% of all CVEs (2 Nov 2026)
CISA SSVC
Exploitation: poc · Automatable: yes · Technical impact: partial

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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.7.

Weakness

Affected products

  • Kaillera Project · Server

    • affected ≤ 0.86

References (4)

Sources

The same CVE in the primary databases and aggregators, to check against.

Record last updated .