9.8

CVE-2016-6296: php

Modified
AliasesUBUNTU-CVE-2016-6296USN-3059-1DEBIAN-CVE-2016-6296
Published 25-07-2016Last modified 06-08-2024

Vulnerability summary

CVE-2016-6296 is a critical (CVSS 9.8) vulnerability in php. EPSS estimates a 6.27% chance of exploitation in the next 30 days, higher than 93.5% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (reference, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
9.8/10
010
Critical · v3.0 (NVD)
EPSS score
6.27%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 11 · Related 7
DLA-628-1DSA-3631-1MGASA-2016-0267RHSA-2016:2750SUSE-SU-2016:2080-1SUSE-SU-2016:2210-1

Timeline

  1. 25-07-2016
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

Integer signedness error in the simplestring_addn function in simplestring.c in xmlrpc-epi through 0.54.2, as used in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9, allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a long first argument to the PHP xmlrpc_encode_request function.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

6.27%

Chance of exploitation in the next 30 days

Percentile

94%

Versus all other CVEs

30-day change

No change 0.00 pp

From 6.27% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugs.php.net)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu3 products
  • php5< 5.5.9+dfsg-1ubuntu4.19
  • php7.0< 7.0.8-0ubuntu0.16.04.2
  • xmlrpc-epi< 0.54.2-1+deb7u1ubuntu0.14.04.2 | < 0.54.2-1.1ubuntu0.1
Debian1 product
  • xmlrpc-epi< 0.54.2-1.2 | < 0.54.2-1.1+deb8u1 | < 0.54.2-1+deb7u1
Php1 product
  • phpEOL≤ 5.5.37 | 5.6.0:alpha1 | 5.6.0:alpha2 | 5.6.0:alpha3 | 5.6.0:alpha4 | 5.6.0:alpha5 | 5.6.0:beta1 | 5.6.0:beta2 | 5.6.0:beta3 | 5.6.0:beta4 | 5.6.1 | 5.6.2 | 5.6.3 | 5.6.4 | 5.6.5 | 5.6.6 | 5.6.7 | 5.6.8 | 5.6.9 | 5.6.10 | 5.6.11 | 5.6.12 | 5.6.13 | 5.6.14 | 5.6.15 | 5.6.16 | 5.6.17 | 5.6.18 | 5.6.19 | 5.6.20 | 5.6.21 | 5.6.22 | 5.6.23 | 7.0.0 | 7.0.1 | 7.0.2 | 7.0.3 | 7.0.4 | 7.0.5 | 7.0.8

3 vendors · 5 products

References

19 links
Show all 19 references