CVE-2026-66776

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 52/100
Published: 2026-08-11 Modified: 2026-10-24 First seen: 2026-10-29 Status: active

Attack Surface

Network No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: Low
UI: None
S: Unchanged
C: High
I: Low
A: None

Description

SAP Approuter does not consistently enforce integrity verification on certain session-related request headers under specific conditions. An attacker with low privileges could send a specially crafted request that bypasses the integrity check and loads another user's session context. Successful exploitation requires the attacker to have previously observed matching session values out-of-band, which makes the attack complex to execute. This could result in a high impact on confidentiality and a low impact on integrity. There is no impact on availability.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
sap approuter < 23.0.0

References & Advisories (2)

https://me.sap.com/notes/3786038
Permissions Required

Bug Bounty Relevance

52 / 100
✓ Network accessible
✓ No user interaction

CVSS Score

5.9 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N

EPSS — Exploitation Probability

0.20%
Raw Score 0.002000
Percentile 9.9%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00200
2026-10-28
0.00200

Intelligence Sources

nvd ref →