> CVE-2026-78049 [LOW]

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PUBLISHED
2026-08-22 23:16
MODIFIED
2026-08-22 23:16
CVSS_SCORE V3
2.9
EPSS (Prob. Exploit)
0.62%
Top 50.7%
DATA SOURCES:
NVD 🔗 2026-08-23 CWE MITRE 🔗 2026-09-01 FIRST EPSS 🔗 2026-10-25 OSV 🔗 2026-09-14

> DESCRIPTION

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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
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

> MÉTRIQUES CVSS DÉTAILLÉES

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
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
High (H)
Conditions spécifiques doivent être réunies pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
None (N)
Aucune divulgation d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
Low (L)
Interruption partielle du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
Low
Interruption partielle du service possible

> WEAKNESSES

CWE-119 CWE-125

> CWE DETAILED DESCRIPTIONS

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer - The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data. | CWE-125: Out-of-bounds Read - The product reads data past the end, or before the beginning, of the intended buffer.

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Systerel S2OPC AddNodes Service sopc_node_mgt_helper_internal.c out-of-bounds

AFFECTED PACKAGES:
Unknown / Unknown
4 versions affected

> HISTORIQUE DES MODIFICATIONS

Première apparition
22/08/2026 23:16
Source: NVD
📊 ENRICHISSEMENT 01/09/2026 06:02
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer - The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buff...
Total des modifications: 1 Dernière mise à jour: 1 month ago

> REFERENCES

https://github.com/user-attachments/files/29702766/PoC.zip
https://gitlab.com/systerel/S2OPC/-/commit/aafbd37d381b618312ebdf5ddf57027f62c14...
https://gitlab.com/systerel/S2OPC/-/merge_requests/1826
https://gitlab.com/systerel/S2OPC/-/work_items/1787
https://vuldb.com/cve/CVE-2026-78049
https://vuldb.com/submit/881262
https://vuldb.com/vuln/394290
https://vuldb.com/vuln/394290/cti
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