10

CVE-2008-5557: php

Modified
Published 23-12-2008Last modified 07-08-2024

Vulnerability summary

CVE-2008-5557 is a high (CVSS 10.0) vulnerability in php. EPSS estimates a 7.37% chance of exploitation in the next 30 days, higher than 94.4% of scored vulnerabilities. 2 public exploits are recorded.

Priority
Prioritisepublic exploit

Public exploit (reference, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
10.0/10
010
High · v2.0 (NVD)
EPSS score
7.37%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits2reference

Advisory lineage

Upstream 0 · Downstream 5
DSA-1789-1DTSA-188-1RHSA-2009:0337RHSA-2009:0338RHSA-2009:0350

Timeline

  1. 23-12-2008
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

Heap-based buffer overflow in ext/mbstring/libmbfl/filters/mbfilter_htmlent.c in the mbstring extension in PHP 4.3.0 through 5.2.6 allows context-dependent attackers to execute arbitrary code via a crafted string containing an HTML entity, which is not properly handled during Unicode conversion, related to the (1) mb_convert_encoding, (2) mb_check_encoding, (3) mb_convert_variables, and (4) mb_parse_str functions.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

7.37%

Chance of exploitation in the next 30 days

Percentile

94%

Versus all other CVEs

30-day change

No change 0.00 pp

From 7.37% 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

2 found
  • referenceUnverified

    Exploit Reference (cvs.php.net)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (bugs.php.net)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

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

Php1 product
  • phpEOL4.3.0 | 4.3.1 | 4.3.2 | 4.3.3 | 4.3.4 | 4.3.5 | 4.3.6 | 4.3.7 | 4.3.8 | 4.3.9 | 4.3.10 | 4.3.11 | 4.4.0 | 4.4.1 | 4.4.2 | 4.4.3 | 4.4.4 | 4.4.5 | 4.4.6 | 4.4.7 | 4.4.8 | 4.4.9 | 5.0.0 | 5.0.0:beta1 | 5.0.0:beta2 | 5.0.0:beta3 | 5.0.0:beta4 | 5.0.0:rc1 | 5.0.0:rc2 | 5.0.0:rc3 | 5.0.1 | 5.0.2 | 5.0.3 | 5.0.4 | 5.0.5 | 5.1.0 | 5.1.1 | 5.1.2 | 5.1.3 | 5.1.4 | 5.1.5 | 5.1.6 | 5.2.0 | 5.2.1 | 5.2.2 | 5.2.3 | 5.2.4 | 5.2.5 | 5.2.6

1 vendor · 1 product

References

29 links
Show all 29 references