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NVD / CVE Program· CNA mitre

CVE-2016-7568: Integer overflow in the gdImageWebpCtx function in gd_webp.c in the GD Graphics Library (aka libgd) through 2.2.3, as used in PHP through…

CriticalCVSS 9.8 · v3.0—No exploit Fix available

Noroxi assessment

Priority: Plan (action score 41/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 5.1% (FIRST EPSS); higher than 92.5% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: gd (Alpine:v3.4) 2.2.3-r1; libgd2 (Debian:12) 2.2.3-87-gd0fec80-1; libgd2 (Debian:8) 2.1.0-5+deb8u7.

Add it to your regular patch cycle. Upgrade to gd (Alpine:v3.4) 2.2.3-r1; libgd2 (Debian:12) 2.2.3-87-gd0fec80-1; libgd2 (Debian:8) 2.1.0-5+deb8u7 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Integer overflow in the gdImageWebpCtx function in gd_webp.c in the GD Graphics Library (aka libgd) through 2.2.3, as used in PHP through 7.0.11, allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via crafted imagewebp and imagedestroy calls.

Published
Sep 28, 2016
Updated
Jun 16, 2026
EPSS
5.1% · 92th percentile

Report tools

JSON

Action score

41

Plan

Add it to your regular patch cycle.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
2 / 30 · 5.1%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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Follow CVE-2016-7568

When you'll hear from us

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
libgdlibgd
phpphp
debiandebian linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • php php5.6.0 and later · up to 5.6.26 inclusive
  • php php7.0.0 and later · up to 7.0.11 inclusive

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.4gdbefore 2.2.3-r12.2.3-r1
Debian:12libgd2before 2.2.3-87-gd0fec80-12.2.3-87-gd0fec80-1
Debian:8libgd2before 2.1.0-5+deb8u72.1.0-5+deb8u7
SUSE:Linux Enterprise Desktop 12 SP1gdbefore 2.1.0-17.12.1.0-17.1
SUSE:Linux Enterprise Module for Web and Scripting 12php5before 5.5.14-83.15.5.14-83.1
SUSE:Linux Enterprise Module for Web and Scripting 12php7before 7.0.7-20.17.0.7-20.1

Same product

libgd: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-6977gdImageColorMatch in gd_color_match.c in the GD Graphics Library (aka LibGD) 2.2.5, as used in the imagecolormatch function in PHP before 5.
    56Plan
  • CVE-2016-3074Integer signedness error in GD Graphics Library 2.1.1 (aka libgd or libgd2) allows remote attackers to cause a denial of service (crash) or…
    50Plan
  • CVE-2016-10166Integer underflow in the _gdContributionsAlloc function in gd_interpolation.c in the GD Graphics Library (aka libgd) before 2.2.4 allows…
    42Plan

Published before and after this one in the same product

  • ← EarlierCVE-2016-6207Aug 12, 2016 · Integer overflow in the _gdContributionsAlloc function in gd_interpolation.c in GD Graphics Library (aka libgd) before 2.2.3 allows remote…
    28Monitor
  • ← EarlierCVE-2016-6214Aug 12, 2016 · gd_tga.c in the GD Graphics Library (aka libgd) before 2.2.3 allows remote attackers to cause a denial of service (out-of-bounds read) via…
    27Monitor
  • Later →CVE-2016-6905Oct 3, 2016 · The read_image_tga function in gd_tga.c in the GD Graphics Library (aka libgd) before 2.2.3 allows remote attackers to cause a denial of…
    27Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:gd2.2.3-r1 · Alpine:v3.4Package registry (OSV)
debian:libgd22.2.3-87-gd0fec80-1 · Debian:12Package registry (OSV)
suse:gd2.1.0-17.1 · SUSE:Linux Enterprise Desktop 12 SP1Package registry (OSV)
suse:php55.5.14-83.1 · SUSE:Linux Enterprise Module for Web and Scripting 12Package registry (OSV)
suse:php77.0.7-20.1 · SUSE:Linux Enterprise Module for Web and Scripting 12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Not on record for this CVE: EPSS history · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-190 · Integer Overflow or Wraparound

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records