MEDIUM
Beckhoff TwinCAT 2.11.0.2004 and earlier allows remote attackers to cause a denial of service via a crafted request to UDP port 48899, which triggers an out-of-bounds read
Published Sep 16, 2011
5.0
MEDIUMCVSS 2.0
EPSS 49.65%
Description
Beckhoff TwinCAT 2.11.0.2004 and earlier allows remote attackers to cause a denial of service via a crafted request to UDP port 48899, which triggers an out-of-bounds read.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
49.65% 0.49650
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.49650
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (25 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 49.65% (0.49650) | 98.86th | v5 (v2026.06.15) |
| Jun 15, 2026 | 50.56% (0.50556) | 98.77th | v5 (v2026.06.15) |
| May 26, 2026 | 58.41% (0.58413) | 98.23th | v4 (v2025.03.14) |
| Oct 21, 2025 | 59.72% (0.59716) | 98.13th | v4 (v2025.03.14) |
| Mar 30, 2025 | 61.66% (0.61661) | 98.18th | v4 (v2025.03.14) |
| Mar 29, 2025 | 63.87% (0.63865) | 97.78th | v4 (v2025.03.14) |
| Mar 19, 2025 | 61.66% (0.61661) | 98.13th | v4 (v2025.03.14) |
| Mar 17, 2025 | 59.46% (0.59464) | 98.03th | v4 (v2025.03.14) |
| Feb 11, 2025 | 83.89% (0.83893) | 98.73th | v3 (v2023.03.01) |
| Dec 30, 2024 | 86.27% (0.86273) | 98.83th | v3 (v2023.03.01) |
| Dec 17, 2024 | 84.74% (0.84736) | 98.73th | v3 (v2023.03.01) |
| Nov 16, 2024 | 77.01% (0.77007) | 98.30th | v3 (v2023.03.01) |
| Oct 2, 2024 | 71.50% (0.71503) | 98.12th | v3 (v2023.03.01) |
| Jun 25, 2024 | 64.47% (0.64467) | 97.91th | v3 (v2023.03.01) |
| May 6, 2024 | 70.10% (0.70097) | 98.00th | v3 (v2023.03.01) |
| Mar 16, 2024 | 66.90% (0.66903) | 97.85th | v3 (v2023.03.01) |
| Jan 23, 2024 | 54.67% (0.54666) | 97.35th | v3 (v2023.03.01) |
| Nov 29, 2023 | 46.13% (0.46128) | 97.07th | v3 (v2023.03.01) |
| Oct 5, 2023 | 43.82% (0.43819) | 96.92th | v3 (v2023.03.01) |
| Jun 15, 2023 | 32.55% (0.32554) | 96.42th | v3 (v2023.03.01) |
| Apr 16, 2023 | 21.24% (0.21238) | 95.69th | v3 (v2023.03.01) |
| Mar 7, 2023 | 15.47% (0.15471) | 94.95th | v3 (v2023.03.01) |
| Mar 6, 2023 | 65.92% (0.65919) | 99.05th | v2 (v2022.01.01) |
| Mar 2, 2022 | 65.92% (0.65919) | 98.83th | v2 (v2022.01.01) |
| Feb 4, 2022 | 67.29% (0.67290) | 98.90th | v2 (v2022.01.01) |
Weaknesses (1)
References (5)
- http://aluigi.altervista.org/adv/twincat_1-adv.txt x_refsource_MISCExploit
- http://osvdb.org/75495 vdb-entryx_refsource_OSVDB
- http://securityreason.com/securityalert/8380 third-party-advisoryx_refsource_SREASON
- http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-256-06.pdf x_refsource_MISCUS Government Resource
- https://exchange.xforce.ibmcloud.com/vulnerabilities/69765 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://aluigi.altervista.org/adv/twincat_1-adv.txt | x_refsource_MISCExploit | |
| http://osvdb.org/75495 | vdb-entryx_refsource_OSVDB | |
| http://securityreason.com/securityalert/8380 | third-party-advisoryx_refsource_SREASON | |
| http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-256-06.pdf | x_refsource_MISCUS Government Resource | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/69765 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Sep 16, 2011
Updated Aug 6, 2024
Reserved Sep 16, 2011
Link CVE-2011-3486
CISA Vulnrichment
Updated n/a