# CVE-2026-6719: IBM Concert weak cryptographic algorithms allow decryption

Source: https://junglewise.ai/threats/cve-2026-6719-ibm-concert-1-0-through-3-0-0-uses-weaker-than-expected  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-19. Updated: 2026-10-19  
License: CC BY 4.0 with a link back

CVE-2026-6719 · Severity: high · CVSS 7.5 · Published 2026-10-19

IBM Concert is a software platform that processes sensitive data. Versions 1.0 through 3.0.0 use weak encryption algorithms that attackers could exploit to decrypt confidential information. An attacker with network access could recover sensitive data protected by these weak ciphers.

Technologies: [IBM Concert](https://junglewise.ai/threats/technologies/concert). Vendors: [IBM](https://junglewise.ai/threats/vendors/ibm).

## Quick answers

**Is CVE-2026-6719 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-6719 being exploited in the wild.

**How severe is CVE-2026-6719?** High severity, with a CVSS score of 7.5, published 19 October 2026.

**Which products and versions are affected?** IBM Concert 1.0 through 3.0.0.

**Is there a fix for CVE-2026-6719?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-6719 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-6719?** Check whether you run IBM Concert at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

IBM Concert implements cryptographic algorithms that are weaker than expected, allowing attackers to decrypt highly sensitive information. The vulnerability affects versions 1.0 through 3.0.0 and can be exploited over the network without authentication. The exact nature of the weak algorithms is not detailed in the advisory, but the impact is exposure of encrypted data.

## Affected products

- IBM Concert 1.0 through 3.0.0

## Timeline

- 2026-10-19: disclosed

## References

- [https://www.ibm.com/support/pages/node/7292374](https://www.ibm.com/support/pages/node/7292374)

## Related threats

- [IBM Concert command injection vulnerability](https://junglewise.ai/threats/cve-2026-6715-ibm-concert-1-0-through-3-0-1-1-allows-an-attacker-can-supply)
- [IBM Concert arbitrary command execution in dependencies](https://junglewise.ai/threats/cve-2026-15266-ibm-concert-1-0-through-3-0-1-1-contains-components-that-allow)
- [IBM Concert cross-site scripting in Web UI](https://junglewise.ai/threats/cve-2026-4413-ibm-concert-1-0-through-3-0-0-is-vulnerable-to-cross-site)
- [IBM Concert local web cache accessible to other users](https://junglewise.ai/threats/cve-2026-4405-ibm-concert-1-0-through-3-0-0-allows-web-page-cache-to-be-stored)
- [IBM Concert information disclosure through schema suggestions](https://junglewise.ai/threats/cve-2026-3628-ibm-concert-1-0-through-3-0-0-allows-information-disclosure)