CVE•Published 2026-08-11•Modified 2026-09-02•1 article on news•5 live references•NVD data

CVE-2026-62911Microsoft · Exchange_server

Vulnerability data via NVD (ingested)

CVSS v3.1

8.0

HIGH

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

EPSS percentile

Exploit Prediction Scoring System · top 42% of all CVEs

Weaknesses (CWE)

CWE-294Authentication Bypass by Capture-replay

Description

Authentication bypass by capture-replay in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

Timeline

Published 2026-08-11

Modified 2026-09-02

External references

NVD MITRE Exploit-DB GitHub PoC VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-62911

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product + version

product:"Microsoft Exchange Server" version:"2016"

Version-pinned fingerprint from NVD's first vulnerable CPE.

Shodan · banner/body mention

http.html:"Exchange Server"

HTTP body or banner mentions "Exchange Server" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-62911

Country / ASN / product breakdown for the vuln query.

Censys

vulnerabilities.cve_id: CVE-2026-62911

Censys host search filtered to this CVE id.

grep.app

CVE-2026-62911

Public source-code mentions — fast PoC discovery.

GitHub code

CVE-2026-62911

GitHub code search for direct mentions.

Google dork

"CVE-2026-62911" exploit -site:nvd.nist.gov

Write-ups and news, NVD excluded.

Known PoCs on GitHub (5)

CVE-2026-629115 repos

GhostTroops/TOPShell

TOP All bugbounty pentesting CVE-2023- POC Exp RCE example payload Things

★ 734·updated 2d ago

hypnguyen1209/CVE-2026-62911Python

POC pre-auth RCE on Exchange

★ 177·updated 1mo ago

killvxk/gitweeklyPython

收集各种有趣的github项目

★ 121·updated 1w ago

MaikCyberSec/Threat-Hunting-unknown

Threat Hunting based on KQL

★ 12·updated 2w ago

Ch4120N/Ch4120N-CVE-PulsePython

Live CVE PoC (Proof-of-Concepts) Aggregator with Smart Search & Threat Intelligence

★ 3·updated 1d ago