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Shadowserver

Nonprofit that scans the internet for vulnerable and compromised systems, sharing threat data with network owners, CERTs, and law enforcement.

Known aliases

  • Shadowserver
  • Shadowserver Foundation
  • The Shadowserver Foundation

Current stories

securityConfirmed8 publishers

Suspected China-nexus actor exploited BeyondTrust Remote Support zero-day from late August

BeyondTrust says a suspected China-nexus actor has exploited Remote Support flaw CVE-2026-102764 since late August. SaaS customers were patched on October 8, but self-hosted installs without automatic updates must be updated by hand.

Perspective Coverage

8 publishers
Builder
Builder 16%
Operator
Operator 67%
Investor
Investor 17%

Reality

Evidence78
Adoption
Not scored
Hype gap+5
Incentives40
Confidence76
securityConfirmed5 publishers

Exploited Cisco email gateway flaw lets a crafted attachment run commands as root

Cisco patched CVE-2026-76519, an exploited Secure Email Gateway flaw that gives unauthenticated attackers root through a crafted email attachment. Devices with File Reputation enabled and Content Scanner Tools earlier than 25.3.0.5525 are affected.

Perspective Coverage

5 publishers
Builder
Builder 13%
Operator
Operator 76%
Investor
Investor 11%

Reality

Evidence82
Adoption
Not scored
Hype gap+5
Incentives
Not scored
Confidence78
securityConfirmed7 publishers

Honeypots log exploitation attempts against SonicWall SMA1000 flaw three days after patch

Attackers began targeting SonicWall's maximum-severity SMA1000 flaw CVE-2026-102255 within three days of its patch, Previdian's honeypots show. SonicWall's advisory had not called it exploited by Friday, so owners waiting on that label are patching behind the attackers.

Perspective Coverage

7 publishers
Builder
Builder 17%
Operator
Operator 77%
Investor
Investor 6%

Reality

Evidence66
Adoption25
Hype gap+28
Incentives40
Confidence72
securityConfirmed5 publishers

SAML role decides which NetScaler appliances Citrix's new RCE flaw can reach

Citrix urged NetScaler customers to patch CVE-2026-107406, a memory overflow that allows remote code execution on appliances set up as SAML IdP or SP. The company says it knows of no attacks so far, on a product line where it has patched exploited zero-days twice in recent weeks.

Perspective Coverage

5 publishers
Builder
Builder 30%
Operator
Operator 61%
Investor
Investor 9%

Reality

Evidence83
Adoption60
Hype gap+12
Incentives42
Confidence84
securityConfirmed4 publishers

SonicWall patches a third pre-auth SSRF flaw in SMA 1000 gateways this year

SonicWall patched four flaws in its SMA 1000 VPN gateways, led by CVE-2026-102255, a server-side request forgery open to remote attackers without credentials. The company reports no exploitation, though attackers used two similar SMA 1000 flaws as zero-days this year.

Perspective Coverage

4 publishers
Builder
Builder 23%
Operator
Operator 67%
Investor
Investor 10%

Reality

Evidence72
Adoption30
Hype gap+8
Incentives
Not scored
Confidence70
securityConfirmed4 publishers

Three days from patch to probe: SAP Commerce Cloud RCE is already being hunted

CVE-2026-58231 is an unauthenticated, CVSS 10.0 code execution bug in Commerce Cloud's Data Hub Adapter. Defused says attempts hit its honeypots three days after patch day.

Perspective Coverage

4 publishers
Builder
Builder 21%
Operator
Operator 66%
Investor
Investor 13%

Reality

Evidence62
Adoption55
Hype gap+25
Incentives45
Confidence68
securityConfirmed5 publishers

Kiteworks clears customers to restart file-transfer servers after a weekend shutdown on a federal tip

Kiteworks lifted its worldwide shutdown advice after patching a critical flaw in a feature used by under 1% of customers. Self-hosted operators stopped and restarted on the vendor's word alone, with no CVE yet to check the fix against.

Perspective Coverage

5 publishers
Builder
Builder 23%
Operator
Operator 60%
Investor
Investor 17%

Reality

Evidence55
Adoption
Not scored
Hype gap+15
Incentives70
Confidence60
securityConfirmed7 publishers

Citrix called it a crash bug. It is unauthenticated RCE, and CISA gave agencies three days.

CVE-2026-8452 shipped as a June 30 denial-of-service fix. A WatchTowr proof of concept turned it into pre-auth code execution, and in-the-wild exploitation followed.

Perspective Coverage

7 publishers
Builder
Builder 14%
Operator
Operator 80%
Investor
Investor 6%

Reality

Evidence78
Adoption50
Hype gap−40
Incentives
Not scored
Confidence74
securityConfirmed6 publishers

Attackers are running code on BIG-IP APM boxes configured as OAuth authorization servers

F5 disclosed CVE-2026-94127 on September 22 with hotfixes and evidence of exploitation. It is a data plane heap overflow, so a locked-down management interface still leaves the system exploitable, and federal agencies had until September 25.

Perspective Coverage

6 publishers
Builder
Builder 19%
Operator
Operator 64%
Investor
Investor 17%

Reality

Evidence78
Adoption40
Hype gap+10
Incentives30
Confidence75
securityOne report1 publisher

Some of the 50-plus Zimbra bugs Rapid7 found let attackers send mail as someone else without credentials

Rapid7's research with Zimbra turned up more than 50 vulnerabilities, several of which let an attacker send mail as another user with no password involved. The operational item today is CVE-2026-73570, the SNMP command injection CISA gave federal agencies three days to fix.

Publishers:blog.rapid7.com

Reality

Evidence55
Adoption60
Hype gap+25
Incentives78
Confidence55
securityOne report1 publisher

CISA gives federal agencies three days to fix the ScreenConnect flaw already under attack

ConnectWise's stopgap is to switch off file transfers in ScreenConnect, and with CISA's exploited-flaw listing now carrying a three-day federal deadline, more than 1,000 exposed servers still run the unpatched build.

Reality

Evidence62
Adoption70
Hype gap+12
Incentives45
Confidence60
buildOne report1 publisher

Check Point ships this week's VPN fix as a live patch for three versions and an upgrade for the rest

Two unauthenticated Check Point RCEs, a CVSS 10.0 GitLab path traversal and an already-exploited N-able flaw all came due on September 11. How fast each one closes depends on the release you happen to be running.

Publishers:dev.to

Reality

Evidence35
Adoption40
Hype gap+30
Incentives30
Confidence40
buildOne report1 publisher

Exploitation beat CVE publication for about 256 vulnerabilities last year

VulnCheck logged 884 vulnerabilities with first-time exploitation evidence in 2025, and 28.96% of them were already being exploited by the day their CVE appeared, up from 23.6% a year earlier. The same report calls the year's timing highly consistent with 2024.

Publishers:vulncheck.com

Reality

Evidence52
Adoption
Not scored
Hype gap+18
Incentives78
Confidence48
securityOne report1 publisher

ConnectWise tells ScreenConnect admins to strip file-transfer rights before its patch lands

ConnectWise says the fix arrives later this week. Until it does, the only step it offers is a hand-edited per-role permission change that turns off file transfer inside support sessions, on cloud and on-premises alike.

Reality

Evidence42
Adoption34
Hype gap+12
Incentives66
Confidence52
securityOne report1 publisher

Exploit attempts hit NetScaler's August auth bypass 15 days after Citrix shipped the fix

The mid-August Citrix advisory that many teams parked behind lower-risk work now has attack traffic behind it, and the appliances in scope are the ones fronting remote access. Role and firmware decide scope, not appliance count.

Reality

Evidence60
Adoption34
Hype gap+15
Incentives58
Confidence58

Earlier coverage