CVE-2026-7736 Details
Description
A vulnerability was determined in osrg GoBGP up to 4.3.0. Affected by this vulnerability is the function parseRibEntry of the file pkg/packet/mrt/mrt.go. Executing a manipulation can lead to integer underflow. It is possible to launch the attack remotely. Upgrading to version 4.4.0 addresses this issue. This patch is called 76d911046344a3923cbe573364197aa081944592. It is suggested to upgrade the affected component.
An integer underflow vulnerability has been identified in osrg GoBGP versions prior to 4.4.0. The issue arises in the parseRibEntry function within the MRT packet handling code. This vulnerability can be exploited remotely, leading to potential manipulation of BGP route information.
Users are advised to upgrade to osrg GoBGP version 4.4.0 or later, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 4, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/osrg/gobgp/ | [email protected] | Product |
| https://github.com/osrg/gobgp/commit/76d911046344a3923cbe573364197aa081944592 | [email protected] | Patch |
| https://github.com/osrg/gobgp/releases/tag/v4.4.0 | [email protected] | PatchProduct |
| https://vuldb.com/submit/807604 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/360911 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/360911/cti | [email protected] | Permissions RequiredVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-189 | Numeric Errors | [email protected] |
| CWE-191 | Integer Underflow (Wrap or Wraparound) | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| osrg gobgp | < 4.4.0 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 6, 2026 | Initial Analysis | [email protected] |
| May 4, 2026 | New CVE Received | [email protected] |