CVE-2025-44964: A lack of SSL certificate validation in BlueStacks v5.20 allows attackers to execute a man-it-the-middle attac

Routine

LOW 3.9DOWNGRADE

CVE-2025-44964 is a low-severity flaw (CVSS 3.9) affecting bluestacks. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A lack of SSL certificate validation in BlueStacks v5.20 allows attackers to execute a man-it-the-middle attack and obtain sensitive information.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	3.9 (Low)
Attack vector	Adjacent network
Attack complexity	High
Privileges needed	High
User interaction	None
EPSS exploit chance	0.1% (top 98%)
CISA exploited list	No
Weakness	CWE-295
Published	2025-08-05
Last modified	2026-07-05

Publisher (CNA): MITRE · Vendor: bluestacks

Last updated 2026-07-05 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-08-05 15:15 UTCPublished CVE record published
2026-07-05 01:21 UTCUpdated Record last modified

bluestacks bluestacks DOWNGRADE

Affected: 5.20

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.20

1. Check installed version

apt-cache policy bluestacks || rpm -q bluestacks || bluestacks --version

2. No fixed release: DOWNGRADE to a release before 5.20 (Debian / Ubuntu)

apt-cache madison bluestacks sudo apt install bluestacks=<VERSION_BEFORE_5.20> sudo apt-mark hold bluestacks

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list bluestacks sudo dnf downgrade bluestacks-<VERSION_BEFORE_5.20> sudo dnf versionlock add bluestacks

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2025-44964?

bluestacks: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-44964 being exploited?

CVE-2025-44964 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-2025-44964 affect?

CVE-2025-44964 affects bluestacks. Severity is low (CVSS 3.9). A lack of SSL certificate validation in BlueStacks v5.20 allows attackers to execute a man-it-the-middle attack and obtain sensitive information.

How urgent is CVE-2025-44964?

Priority 14/100. No elevated risk signals yet.

References

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