What is CVE-2026-88907?

CVE-2026-88907 is a high-severity vulnerability in Tübitak Ulakbim Ulakpdf, classified under Incorrect Authorization. CVSS score: 7.4/10. Published 2026-09-24.

How severe is CVE-2026-88907?

High severity. CVSS v3 base score is 7.4 out of 10.

Auth bypass in Tübitak Ulakbim Ulakpdf

CVE-2026-88907

Incorrect Authorization vulnerability in TÜBİTAK ULAKBİM UlakPDF allows Authentication Bypass. This issue affects UlakPDF: through 09092026.

Vulnerability class: Broken Access Control

Published 2026-09-24 · last modified 2026-09-24.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (24.6th percentile), scored 2026-11-09.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 24.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Tübitak Ulakbim Ulakpdf

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-1170 (government-resource)

Frequently asked questions

What is CVE-2026-88907?: CVE-2026-88907 is a high-severity vulnerability in Tübitak Ulakbim Ulakpdf, classified under Incorrect Authorization. CVSS score: 7.4/10. Published 2026-09-24.
How severe is CVE-2026-88907?: High severity. CVSS v3 base score is 7.4 out of 10.