CVE-2026-7736

HIGH

7.3

CVSS v3

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.

CWE-189 CWE-191

How to fix

Remediation Available

gobgpDebian

Fixed in:4.4.0-1CVE-2026-7736

gobgpUbuntu

Fixed in:1.29-1ubuntu0.1+esm2USN-8348-1

Fixed in:2.12.0-1ubuntu0.1~esm3USN-8348-1

Fixed in:2.25.0-3ubuntu0.1+esm4USN-8348-1

Fixed in:3.23.0-1ubuntu0.3+esm4USN-8348-1

gobgpdUbuntu

Fixed in:1.29-1ubuntu0.1+esm2USN-8348-1

Fixed in:2.12.0-1ubuntu0.1~esm3USN-8348-1

Fixed in:2.25.0-3ubuntu0.1+esm4USN-8348-1

Fixed in:3.23.0-1ubuntu0.3+esm4USN-8348-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityLow

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Exploit Intelligence

0.45%probability of exploitation in 30 days

38thpercentile

Low risk: more likely to be exploited than 38% of all known CVEs.

References

Patch2

Third-Party Advisory2

VDB Entry1

vuldb.com

Product1

github.com

Related Vulnerabilities

Other CWE-189 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-1538	High	10.0	99%	-	-
CVE-2006-3747	High	7.6	97%	-	Fix
CVE-2007-0071	High	9.3	93%	-	-
CVE-2015-3829	High	10.0	90%	-	-
CVE-2015-3864	High	10.0	87%	-	-
CVE-2015-1539	High	10.0	86%	-	-

Common questions

How do I fix CVE-2026-7736?

Published advisories record a fix for 3 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2026-7736 being actively exploited?

Not that we know of. CVE-2026-7736 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.45% is the estimated probability that it will be exploited in the next 30 days. That is higher than 38% of all scored CVEs.

How severe is CVE-2026-7736?

CVE-2026-7736 has a CVSS v3 base score of 7.3, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-7736 affect?

Published advisories record a fix for gobgp (Debian), gobgp (Ubuntu), gobgpd (Ubuntu). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.