CVE-2025-35003: Improper Restriction of Operations within the Bounds of a Memory Buffer and Stack-based Buffer Overflow vulner

This week

CRITICAL 9.8REMOTEWATCHLISTUPGRADE

CVE-2025-35003 is a critical-severity flaw (CVSS 9.8) affecting nuttx. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper Restriction of Operations within the Bounds of a Memory Buffer and Stack-based Buffer Overflow vulnerabilities were discovered in Apache NuttX RTOS Bluetooth Stack (HCI and UART components) that may result in system crash, denial of service, or arbitrary code execution, after receiving maliciously crafted packets. NuttX's Bluetooth HCI/UART stack users are advised to upgrade to version 12.9.0, which fixes the identified implementation i

Why this priority

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

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-119, CWE-121
Published	2025-05-26
Last modified	2026-06-17

Publisher (CNA): Apache Software Foundation · Vendor: apache

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

Am I affected?

Timeline

2025-05-26 10:15 UTCPublished CVE record published
2026-06-17 09:14 UTCUpdated Record last modified

apache nuttx UPGRADE

Affected: >= 7.25 and < 12.9.0

Fixed in: 12.9.0

Safe to downgrade to: a release before 7.25

1. Check installed version

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

2. UPGRADE to 12.9.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade nuttx

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade nuttx

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 7.25 (Debian / Ubuntu)

apt-cache madison nuttx sudo apt install nuttx=<VERSION_BEFORE_7.25> sudo apt-mark hold nuttx

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list nuttx sudo dnf downgrade nuttx-<VERSION_BEFORE_7.25> sudo dnf versionlock add nuttx

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.

Exact fixes by distribution

Fedora ELN · fips-provider-next · FIXED · 1.5.3-3.eln159 · FEDORA-2026-3ce99ec7df · source

sudo dnf upgrade --advisory=FEDORA-2026-3ce99ec7df

Fedora 46 · rubygem-webmock · FIXED · 3.26.1-3.fc46 · FEDORA-2026-bb57b4d095 · source

sudo dnf upgrade --advisory=FEDORA-2026-bb57b4d095

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-2025-35003?

nuttx: upgrade to 12.9.0. Exact commands for each OS are on this page.

Is CVE-2025-35003 being exploited?

CVE-2025-35003 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-2025-35003 affect?

CVE-2025-35003 affects nuttx. Severity is critical (CVSS 9.8). Improper Restriction of Operations within the Bounds of a Memory Buffer and Stack-based Buffer Overflow vulnerabilities were discovered in Apache NuttX RTOS Bluetooth Stack (HCI and UART components) that may result in system crash, denial o

How urgent is CVE-2025-35003?

Priority 71/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Bluetooth vulnerabilities

Related CVEs

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CVE-2025-47869 CRITICAL 9.8 UPGRADE Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability was discovered in Apache
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CVE-2021-26461 CRITICAL 9.8 UPGRADE Apache Nuttx Versions prior to 10.1.0 are vulnerable to integer wrap-around in functions malloc, realloc and m

References

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