securitytabs

CVE-2026-70279

Critical9.3

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

CVSS
9.3v3.1
EPSS (exploit probability)
0.9%58th pct
CISA KEV
Not listed

EPSS trendFIRST daily scores, last 90 days

FIRST EPSS held steady from 0.9% on 2026-10-14 to 0.9% on 2026-10-20, ranging 0.9%–0.9% across 6 daily scores.
2026-10-14 → 2026-10-20 · 6 days · 0.9%–0.9%
Daily values
FIRST EPSS daily scores for this CVE
Score dateEPSSPercentile
2026-10-200.9%57.8%
2026-10-190.9%57.7%
2026-10-180.9%57.7%
2026-10-160.9%57.6%
2026-10-150.9%57.6%
2026-10-140.9%57.5%

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

Coverage3 articles

References

Facts sourced from NVD, FIRST EPSS, and CISA KEV. Last synced 2026-10-21 08:34 UTC.

  • CVSS & description: NVD 2.0, fetched 2026-10-21 08:34 UTC
  • EPSS: FIRST EPSS, fetched 2026-10-21 08:34 UTC; score date 2026-10-20
  • KEV: CISA KEV, fetched 2026-10-21 08:34 UTC