CVE-2013-0252: boost::locale::utf::utf_traits in the Boost.Locale library in Boost 1.48 through 1.52 does not properly detect

Routine

MEDIUM 5.0DOWNGRADE

CVE-2013-0252 is a medium-severity flaw (CVSS 5.0) affecting boost. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

boost::locale::utf::utf_traits in the Boost.Locale library in Boost 1.48 through 1.52 does not properly detect certain invalid UTF-8 sequences, which might allow remote attackers to bypass input validation protection mechanisms via crafted trailing bytes.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	2.9% (top 13%)
CISA exploited list	No
Weakness	CWE-20
Published	2013-03-12
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: boost

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2013-03-12 22:55 UTCPublished CVE record published
2026-06-16 23:49 UTCUpdated Record last modified

boost boost DOWNGRADE

Affected: 1.48.0 · 1.49.0 · 1.50.0 · 1.51.0 · 1.52.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.48.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.48.0 (Debian / Ubuntu)

apt-cache madison boost sudo apt install boost=<VERSION_BEFORE_1.48.0> sudo apt-mark hold boost

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

dnf --showduplicates list boost sudo dnf downgrade boost-<VERSION_BEFORE_1.48.0> sudo dnf versionlock add boost

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-2013-0252?

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

Is CVE-2013-0252 being exploited?

CVE-2013-0252 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-2013-0252 affect?

CVE-2013-0252 affects boost. Severity is medium (CVSS 5.0). boost::locale::utf::utf_traits in the Boost.Locale library in Boost 1.48 through 1.52 does not properly detect certain invalid UTF-8 sequences, which might allow remote attackers to bypass input validation protection mechanisms via crafted

How urgent is CVE-2013-0252?

Priority 39/100. No elevated risk signals yet.

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References

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