CVE-2016-7127: php Out-of-bounds Write
Vulnerability summary
CVE-2016-7127 is a critical (CVSS 9.8) Out-of-bounds Write vulnerability in php. EPSS estimates a 6.84% chance of exploitation in the next 30 days, higher than 94% of scored vulnerabilities. 1 public exploit is recorded.
Public exploit (reference, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 8 · Related 6Timeline
- 12-09-2016PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
The imagegammacorrect function in ext/gd/gd.c in PHP before 5.6.25 and 7.x before 7.0.10 does not properly validate gamma values, which allows remote attackers to cause a denial of service (out-of-bounds write) or possibly have unspecified other impact by providing different signs for the second and third arguments.
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
6.84%
Chance of exploitation in the next 30 days
Percentile
94%
Versus all other CVEs
30-day change
No change 0.00 pp
From 6.84% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (bugs.php.net)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu2 products
- php5< 5.5.9+dfsg-1ubuntu4.20
- php7.0< 7.0.8-0ubuntu0.16.04.3
Php1 product
- phpEOL≤ 5.6.24 | 7.0.0 | 7.0.1 | 7.0.2 | 7.0.3 | 7.0.4 | 7.0.5 | 7.0.6 | 7.0.7 | 7.0.8 | 7.0.9
2 vendors · 3 products
References
16 links- www.tenable.com/security/tns-2016-19X Refsource CONFIRM
- github.com/php/php-src/commit/1bd103df00f49cf4d4ade2cfe3f456ac058a4eae?w=1X Refsource CONFIRMIssue TrackingPatch
Show all 16 references
- php.net/ChangeLog-5.phpREPORT
- php.net/ChangeLog-7.phpREPORT