What is CVE-2026-11754?

CVE-2026-11754 is a medium-severity vulnerability in Seres Software Syweb, classified under Observable Discrepancy. CVSS score: 5.3/10. Published 2026-08-27.

How severe is CVE-2026-11754?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Seres Software Syweb

CVE-2026-11754

Observable discrepancy vulnerability in Seres Software syWEB allows Account Footprinting. This issue affects syWEB: through 27082026. NOTE: The vendor was contacted and it was learned that the product is not supported.

Published 2026-08-27 · last modified 2026-08-28.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.002 (13.9th percentile), scored 2026-10-12.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Seres Software Syweb

Weakness classification (CWE)

CWE-203 — Observable Discrepancy

References

siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0932 (government-resource)

Frequently asked questions

What is CVE-2026-11754?: CVE-2026-11754 is a medium-severity vulnerability in Seres Software Syweb, classified under Observable Discrepancy. CVSS score: 5.3/10. Published 2026-08-27.
How severe is CVE-2026-11754?: Medium severity. CVSS v3 base score is 5.3 out of 10.