CVE-2014-125106: Nanopb before 0.3.1 allows size_t overflows in pb_dec_bytes and pb_dec_string.

Q: How do I fix CVE-2014-125106?

nanopb: upgrade to 0.3.1. Exact commands for each OS are on this page.

Q: Is CVE-2014-125106 being exploited?

CVE-2014-125106 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2014-125106 affect?

CVE-2014-125106 affects nanopb. Severity is critical (CVSS 9.8). Nanopb before 0.3.1 allows size_t overflows in pb_dec_bytes and pb_dec_string.

Q: How urgent is CVE-2014-125106?

Priority 55/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2014-125106 is a critical-severity flaw (CVSS 9.8) affecting nanopb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Nanopb before 0.3.1 allows size_t overflows in pb_dec_bytes and pb_dec_string.

Why this priority

Critical severity
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	0.9% (top 39%)
CISA exploited list	No
Weakness	CWE-787
Published	2023-06-17
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nanopb project

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

Am I affected?

Timeline

2023-06-17 22:15 UTCPublished CVE record published
2026-06-17 00:04 UTCUpdated Record last modified

nanopb project nanopb UPGRADE

Affected: < 0.3.1

Fixed in: 0.3.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 0.3.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade nanopb

Note

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

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-2014-125106?

nanopb: upgrade to 0.3.1. Exact commands for each OS are on this page.

Is CVE-2014-125106 being exploited?

CVE-2014-125106 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-2014-125106 affect?

CVE-2014-125106 affects nanopb. Severity is critical (CVSS 9.8). Nanopb before 0.3.1 allows size_t overflows in pb_dec_bytes and pb_dec_string.

How urgent is CVE-2014-125106?

Priority 55/100. Critical severity; Remotely exploitable, no login, no user action

References

← Back to latest CVEs