VulnerabilityAwaiting Analysis

CVE-2026-18461

Use of Externally-Controlled Format String vulnerability in RTI Connext Professional (Core Libraries) allows Format String Injection.

CRITICAL 9.2EPSS 0.33%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.33%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Use of Externally-Controlled Format String vulnerability in RTI Connext Professional (Core Libraries) allows Format String Injection. This issue affects Connext Professional: from 7.5.0 before 7.7.0.1, from 7.3.0.10 before 7.3.1.6.

CVSS 4.0: 9.2 CRITICALCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.33% probability · 26th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-134
Source: 3f572a00-62e2-4423-959a-7ea25eff1638

EPSS trend

EPSS moved from 0.3% on 23 September 2026 to 0.3% on 26 October 2026.

References

https://www.rti.com/vulnerabilities/#cve-2026-18461

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.