CVE-2015-6250: simple-php-captcha before commit 9d65a945029c7be7bb6bc893759e74c5636be694 allows remote attackers to automatic

Q: How do I fix CVE-2015-6250?

simple-php-captcha: upgrade to newer than 2015-08-31. Exact commands for each OS are on this page.

Q: Is CVE-2015-6250 being exploited?

CVE-2015-6250 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-2015-6250 affect?

CVE-2015-6250 affects simple-php-captcha. Severity is medium (CVSS 5.3). simple-php-captcha before commit 9d65a945029c7be7bb6bc893759e74c5636be694 allows remote attackers to automatically generate the captcha response by running the same code on the client-side.

Q: How urgent is CVE-2015-6250?

Priority 41/100. Remotely exploitable, no login, no user action

This month

MEDIUM 5.3REMOTEUPGRADE

CVE-2015-6250 is a medium-severity flaw (CVSS 5.3) affecting simple-php-captcha. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

simple-php-captcha before commit 9d65a945029c7be7bb6bc893759e74c5636be694 allows remote attackers to automatically generate the captcha response by running the same code on the client-side.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 31%)
CISA exploited list	No
Weakness	CWE-200
Published	2017-09-06
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: simple-php-captcha project

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

Am I affected?

Timeline

2017-09-06 21:29 UTCPublished CVE record published
2026-06-17 00:30 UTCUpdated Record last modified

simple-php-captcha project simple-php-captcha UPGRADE

Affected: <= 2015-08-31

Fixed in: newer than 2015-08-31

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy simple-php-captcha || rpm -q simple-php-captcha || simple-php-captcha --version

2. UPGRADE to newer than 2015-08-31 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade simple-php-captcha

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade simple-php-captcha

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-2015-6250?

simple-php-captcha: upgrade to newer than 2015-08-31. Exact commands for each OS are on this page.

Is CVE-2015-6250 being exploited?

CVE-2015-6250 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-2015-6250 affect?

CVE-2015-6250 affects simple-php-captcha. Severity is medium (CVSS 5.3). simple-php-captcha before commit 9d65a945029c7be7bb6bc893759e74c5636be694 allows remote attackers to automatically generate the captcha response by running the same code on the client-side.

How urgent is CVE-2015-6250?

Priority 41/100. Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

References

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