A NULL pointer dereference in the L2 GOOSE and R-GOOSE shared parser, which may allow a network-adjacent attacker to crash a subscribing application… (CVE-2026-50103)
CVE-2026-50103 is a high severity vulnerability caused by a NULL pointer dereference in the L2 GOOSE and R-GOOSE shared parser. A network-adjacent attacker can exploit this flaw by sending a crafted GOOSE frame with a malformed TLV value, potentially crashing a subscribing application. No affected software versions or patches are currently specified. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
This vulnerability involves a NULL pointer dereference in the L2 GOOSE and R-GOOSE shared parser component. An attacker with network adjacency can send a specially crafted GOOSE frame containing a malformed TLV value that triggers the NULL pointer dereference, causing the subscribing application to crash. The vulnerability is classified as high severity but lacks detailed information on affected versions or available patches. No cloud service is involved, and no exploits have been reported in the wild.
Potential Impact
Successful exploitation results in a denial-of-service condition by crashing the subscribing application that processes GOOSE frames. This may disrupt the availability of services relying on this application. No further impact details or privilege escalations are described.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider restricting network access to the affected application to trusted sources to reduce exposure to crafted GOOSE frames.
A NULL pointer dereference in the L2 GOOSE and R-GOOSE shared parser, which may allow a network-adjacent attacker to crash a subscribing application… (CVE-2026-50103)
Description
CVE-2026-50103 is a high severity vulnerability caused by a NULL pointer dereference in the L2 GOOSE and R-GOOSE shared parser. A network-adjacent attacker can exploit this flaw by sending a crafted GOOSE frame with a malformed TLV value, potentially crashing a subscribing application. No affected software versions or patches are currently specified. There are no known exploits in the wild at this time.
CVSS v4.0
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a NULL pointer dereference in the L2 GOOSE and R-GOOSE shared parser component. An attacker with network adjacency can send a specially crafted GOOSE frame containing a malformed TLV value that triggers the NULL pointer dereference, causing the subscribing application to crash. The vulnerability is classified as high severity but lacks detailed information on affected versions or available patches. No cloud service is involved, and no exploits have been reported in the wild.
Potential Impact
Successful exploitation results in a denial-of-service condition by crashing the subscribing application that processes GOOSE frames. This may disrupt the availability of services relying on this application. No further impact details or privilege escalations are described.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider restricting network access to the affected application to trusted sources to reduce exposure to crafted GOOSE frames.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-mg79-w9qx-hwj2
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-50103"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 4.0
Threat ID: 6a629b0d9c2644c7f8d861c7
Added to database: 07/23/2026, 22:51:57 UTC
Last enriched: 07/31/2026, 12:58:36 UTC
Last updated: 09/05/2026, 22:52:11 UTC
Views: 143
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