CVE-2025-45984: Blink routers BL-WR9000 V2.4.9, BL-AC1900 V1.0.2, BL-AC2100_AZ3 V1.0.4, BL-X10_AC8 V1.0.5, BL-LTE300 V1.2.3, B

This week

CRITICAL 9.8REMOTEMITIGATEMITIGATEMITIGATE

CVE-2025-45984 is a critical-severity flaw (CVSS 9.8) affecting bl-wr9000 firmware, bl-ac1900 firmware, bl-ac2100 az3 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Blink routers BL-WR9000 V2.4.9, BL-AC1900 V1.0.2, BL-AC2100_AZ3 V1.0.4, BL-X10_AC8 V1.0.5, BL-LTE300 V1.2.3, BL-F1200_AT1 V1.0.0, BL-X26_AC8 V1.2.8, BLAC450M_AE4 V4.0.0 and BL-X26_DA3 V1.2.7 were discovered to contain a command injection vulnerability via the routepwd parameter in the sub_45B238 function.

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.6% (top 24%)
CISA exploited list	No
Weakness	CWE-77
Published	2025-06-13
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: b-link

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-06-13 12:15 UTCPublished CVE record published
2026-06-17 09:25 UTCUpdated Record last modified

b-link bl-wr9000 firmware MITIGATE

Affected: 2.4.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.4.9

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

b-link bl-ac1900 firmware MITIGATE

Affected: 1.0.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.2

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

b-link bl-ac2100 az3 firmware MITIGATE

Affected: 1.0.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.4

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

b-link bl-x10 ac8 firmware MITIGATE

Affected: 1.0.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.5

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

b-link bl-lte300 firmware MITIGATE

Affected: 1.2.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2.3

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

b-link bl-f1200 at1 firmware MITIGATE

Affected: 1.0.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · opensips · FIXED · 4.0.3-1.fc46 · FEDORA-2026-6700a0026c · source

sudo dnf upgrade --advisory=FEDORA-2026-6700a0026c

Fedora ELN · ibus-typing-booster · FIXED · 2.31.3-1.eln159 · FEDORA-2026-c895c68d60 · source

sudo dnf upgrade --advisory=FEDORA-2026-c895c68d60

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: github.com/glkfc/IoT-Vulnerability/blob/main/LB-LINK/LB-LINK_routepwd%20Indicates%20the%20

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-45984?

bl-wr9000 firmware: mitigate or apply the listed mitigation; bl-ac1900 firmware: mitigate or apply the listed mitigation; bl-ac2100 az3 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-45984 being exploited?

CVE-2025-45984 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-45984 affect?

CVE-2025-45984 affects bl-wr9000 firmware, bl-ac1900 firmware, bl-ac2100 az3 firmware. Severity is critical (CVSS 9.8). Blink routers BL-WR9000 V2.4.9, BL-AC1900 V1.0.2, BL-AC2100_AZ3 V1.0.4, BL-X10_AC8 V1.0.5, BL-LTE300 V1.2.3, BL-F1200_AT1 V1.0.0, BL-X26_AC8 V1.2.8, BLAC450M_AE4 V4.0.0 and BL-X26_DA3 V1.2.7 were discovered to contain a command injection vu

How urgent is CVE-2025-45984?

Priority 66/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-4228 MEDIUM 6.3 MITIGATE A vulnerability was detected in LB-LINK BL-WR9000 2.4.9
CVE-2026-4227 HIGH 8.8 MITIGATE A security vulnerability has been detected in LB-LINK BL-WR9000 2.4.9
CVE-2026-4226 HIGH 8.8 MITIGATE A weakness has been identified in LB-LINK BL-WR9000 2.4.9
CVE-2025-45988 CRITICAL 9.8 MITIGATE MITIGATE Blink routers BL-WR9000 V2.4.9 , BL-AC2100_AZ3 V1.0.4, BL-X10_AC8 v1.0.5 , BL-LTE300 v1.2.3, BL-F1200_AT1 v1.0
CVE-2025-45987 CRITICAL 9.8 MITIGATE MITIGATE Blink routers BL-WR9000 V2.4.9 , BL-AC2100_AZ3 V1.0.4, BL-X10_AC8 v1.0.5 , BL-LTE300 v1.2.3, BL-F1200_AT1 v1.0

References

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