CVE-2021-40142: opcfoundation local_discover_server
CVSS: 7.5v3.1HighModified
Published 27-08-2021Last modified 04-08-2024
Vulnerability summary
CVE-2021-40142 is a high (CVSS 7.5) vulnerability in opcfoundation local_discover_server. EPSS estimates a 2.56% chance of exploitation in the next 30 days, higher than 84.8% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (CVE.org)EPSS score
2.56%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 27-08-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
In OPC Foundation Local Discovery Server (LDS) before 1.04.402.463, remote attackers can cause a denial of service (DoS) by sending carefully crafted messages that lead to Access of a Memory Location After the End of a Buffer.
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:NSourcesAll 2 agree
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
2.56%
Chance of exploitation in the next 30 days
Percentile
85%
Versus all other CVEs
30-day change
0.00 pp
From 2.56% on 19-09-2026
19-09-202619-10-2026
EPSS score2.56%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Siemens6 products
- simatic_net_pc14 | 15 | 16 | 17
- simatic_process_historian_opc_ua_server_firmware< 2022 | 2022
- simatic_winccna
- simatic_wincc_runtimena
- simatic_wincc_unified_scada_runtimena
Opcfoundation1 product
- local_discover_server< 1.04.402.463
2 vendors · 7 products