CVE-2026-78049 json
Systerel S2OPC AddNodes Service sopc_node_mgt_helper_internal.c out-of-bounds
published 2026-08-22 2 mo ago modified 2026-10-12 27 d ago also EUVD-2026-64599
- cvss
- 3.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 50%
- public exploits
- 0
- none known
Summary
A vulnerability has been found in Systerel S2OPC up to 1.7.3. Impacted is the function SOPC_NodeMgtHelperInternal_AddVariableNodeAttributes of the file src/ClientServer/address_space/internal/sopc_node_mgt_helper_internal.c of the component AddNodes Service. The manipulation of the argument UserAccessLevel leads to out-of-bounds read. It is possible to initiate the attack remotely. A high degree of complexity is needed for the attack. The exploitability is considered difficult. The exploit has been disclosed to the public and may be used. The identifier of the patch is aafbd37d381b618312ebdf5ddf57027f62c14fdd. It is suggested to install a patch to address this issue.
Patch / fix
- gitlab.com/systerel/S2OPC@aafbd37 commit
- gitlab.com/systerel/S2OPC#1826 pull request
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.62% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/user-attachments/files/29702766/PoC.zip referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.3 | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P |
| CNA | 3.1 | 3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C |
| CNA | 3.0 | 3.7 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C |
| CNA | 2.0 | 2.6 | AV:N/AC:H/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C |
| CNA | 4.0 | 2.9 | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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 |
| CNA | 3.1 | 3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L |
| CNA | 2.0 | 2.6 | AV:N/AC:H/Au:N/C:N/I:N/A:P |
Affected products
- Systerel S2OPC
Classification
References
-
gitlab.com
/systerel/S2OPC/-/merge_requests/1826
patch
-
gitlab.com
/systerel/S2OPC/-/commit/aafbd37d381b618312ebdf5ddf57027f62c14fdd
patch
-
github.com
/user-attachments/files/29702766/PoC.zip
exploit
-
vuldb.com
/vuln/394290
vdb-entry, technical-description
-
vuldb.com
/vuln/394290/cti
signature, permissions-required
-
vuldb.com
/cve/CVE-2026-78049
third-party-advisory
-
vuldb.com
/submit/881262
third-party-advisory
-
gitlab.com
/systerel/S2OPC/-/work_items/1787
related
Sources
- CVE List CVE-2026-78049
- NVD CVE-2026-78049
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.