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CVE-2012-1147VulnerabilityPublished Updated

expat · Apache2: Readfilemap.c

Affects apache2Source GCVE Database

0

Not known to be exploited.

Data as of 25 Oct 2026, 19:02 UTC

Severity
Medium

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS
2.5% chance of exploitation in 30 days – higher than 85% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Jul 2012

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

What to do

Affected software

ProductAffectedFixed in
Ubuntu:Pro:14.04:LTSapache2pkg:deb/ubuntu/apache2@2.4.7-1ubuntu4.22+esm15?arch=source&distro=esm-infra-legacy/trustyOther threatsAffected
  • =2.4.6-2ubuntu2
  • =2.4.6-2ubuntu3
  • =2.4.6-2ubuntu4
  • =2.4.7-1ubuntu1
  • =2.4.7-1ubuntu2
  • =2.4.7-1ubuntu3
  • =2.4.7-1ubuntu4
  • =2.4.7-1ubuntu4.1
  • =2.4.7-1ubuntu4.4
  • =2.4.7-1ubuntu4.5
  • =2.4.7-1ubuntu4.6
  • =2.4.7-1ubuntu4.7
  • =2.4.7-1ubuntu4.8
  • =2.4.7-1ubuntu4.9
  • =2.4.7-1ubuntu4.10
  • =2.4.7-1ubuntu4.11
  • =2.4.7-1ubuntu4.13
  • =2.4.7-1ubuntu4.15
  • =2.4.7-1ubuntu4.16
  • =2.4.7-1ubuntu4.17
  • =2.4.7-1ubuntu4.18
  • =2.4.7-1ubuntu4.19
  • =2.4.7-1ubuntu4.20
  • =2.4.7-1ubuntu4.21
  • =2.4.7-1ubuntu4.22
  • =2.4.7-1ubuntu4.22+esm1
  • =2.4.7-1ubuntu4.22+esm2
  • =2.4.7-1ubuntu4.22+esm3
  • =2.4.7-1ubuntu4.22+esm4
  • =2.4.7-1ubuntu4.22+esm5
  • =2.4.7-1ubuntu4.22+esm6
  • =2.4.7-1ubuntu4.22+esm8
  • =2.4.7-1ubuntu4.22+esm9
  • =2.4.7-1ubuntu4.22+esm10
  • =2.4.7-1ubuntu4.22+esm12
  • =2.4.7-1ubuntu4.22+esm13
  • =2.4.7-1ubuntu4.22+esm14
  • =2.4.7-1ubuntu4.22+esm15
Fixed in–
Ubuntu:Pro:14.04:LTSapr-utilpkg:deb/ubuntu/apr-util@1.5.3-1ubuntu0.1~esm2?arch=source&distro=esm-infra-legacy/trustyOther threatsAffected
  • =1.5.2-1
  • =1.5.2-1build1
  • =1.5.2-2ubuntu1
  • =1.5.3-1
  • =1.5.3-1ubuntu0.1~esm1
  • =1.5.3-1ubuntu0.1~esm2
Fixed in–
Ubuntu:Pro:14.04:LTSvnc4pkg:deb/ubuntu/vnc4@4.1.1+xorg4.3.0-37ubuntu5.0.2+esm1?arch=source&distro=esm-infra-legacy/trustyOther threatsAffected
  • =4.1.1+xorg4.3.0-37ubuntu5
  • =4.1.1+xorg4.3.0-37ubuntu5.0.1
  • =4.1.1+xorg4.3.0-37ubuntu5.0.2
  • =4.1.1+xorg4.3.0-37ubuntu5.0.2+esm1
Fixed in–
Ubuntu:Pro:14.04:LTSxmlrpc-cpkg:deb/ubuntu/xmlrpc-c@1.33.06-0ubuntu1+esm1?arch=source&distro=esm-infra-legacy/trustyOther threatsAffected
  • =1.16.33-3.2ubuntu3
  • =1.33.06-0ubuntu1
  • =1.33.06-0ubuntu1+esm1
Fixed in–
Ubuntu:Pro:16.04:LTSapache2pkg:deb/ubuntu/apache2@2.4.18-2ubuntu3.17+esm20?arch=source&distro=esm-infra-legacy/xenialOther threatsAffected
  • =2.4.12-2ubuntu2
  • =2.4.17-1ubuntu1
  • =2.4.17-2ubuntu1
  • =2.4.17-3ubuntu1
  • =2.4.18-1ubuntu1
  • =2.4.18-2ubuntu1
  • =2.4.18-2ubuntu2
  • =2.4.18-2ubuntu3
  • =2.4.18-2ubuntu3.1
  • =2.4.18-2ubuntu3.2
  • =2.4.18-2ubuntu3.3
  • =2.4.18-2ubuntu3.4
  • =2.4.18-2ubuntu3.5
  • =2.4.18-2ubuntu3.7
  • =2.4.18-2ubuntu3.8
  • =2.4.18-2ubuntu3.9
  • =2.4.18-2ubuntu3.10
  • =2.4.18-2ubuntu3.12
  • =2.4.18-2ubuntu3.13
  • =2.4.18-2ubuntu3.14
  • =2.4.18-2ubuntu3.15
  • =2.4.18-2ubuntu3.17
  • =2.4.18-2ubuntu3.17+esm1
  • =2.4.18-2ubuntu3.17+esm2
  • =2.4.18-2ubuntu3.17+esm3
  • =2.4.18-2ubuntu3.17+esm4
  • =2.4.18-2ubuntu3.17+esm5
  • =2.4.18-2ubuntu3.17+esm6
  • =2.4.18-2ubuntu3.17+esm7
  • =2.4.18-2ubuntu3.17+esm8
  • =2.4.18-2ubuntu3.17+esm9
  • =2.4.18-2ubuntu3.17+esm10
  • =2.4.18-2ubuntu3.17+esm11
  • =2.4.18-2ubuntu3.17+esm12
  • =2.4.18-2ubuntu3.17+esm13
  • =2.4.18-2ubuntu3.17+esm14
  • =2.4.18-2ubuntu3.17+esm16
  • =2.4.18-2ubuntu3.17+esm17
  • =2.4.18-2ubuntu3.17+esm18
  • =2.4.18-2ubuntu3.17+esm19
  • =2.4.18-2ubuntu3.17+esm20
Fixed in–
Ubuntu:Pro:16.04:LTSapr-utilpkg:deb/ubuntu/apr-util@1.5.4-1ubuntu0.1~esm2?arch=source&distro=esm-infra/xenialOther threatsAffected
  • =1.5.4-1
  • =1.5.4-1build1
  • =1.5.4-1ubuntu0.1~esm1
  • =1.5.4-1ubuntu0.1~esm2
Fixed in–
Ubuntu:16.04:LTScmakepkg:deb/ubuntu/cmake@3.5.1-1ubuntu3?arch=source&distro=xenialOther threatsAffected
  • =3.2.2-2ubuntu3
  • =3.2.2-2ubuntu4
  • =3.3.2-1ubuntu1
  • =3.3.2is3.2.2-0ubuntu1
  • =3.3.2is3.2.2-0ubuntu2
  • =3.3.2is3.2.2-0ubuntu4
  • =3.3.2is3.2.2-0ubuntu5
  • =3.5.0-1ubuntu1
  • =3.5.0-1ubuntu2
  • =3.5.0-1ubuntu3
  • =3.5.1-1ubuntu1
  • =3.5.1-1ubuntu2
  • =3.5.1-1ubuntu3
Fixed in–
Ubuntu:Pro:16.04:LTSghostscriptpkg:deb/ubuntu/ghostscript@9.26~dfsg+0-0ubuntu0.16.04.14+esm10?arch=source&distro=esm-infra/xenialOther threatsAffected
  • =9.16~dfsg~0-0ubuntu3
  • =9.16~dfsg~0-0ubuntu4
  • =9.18~dfsg~0-0ubuntu1
  • =9.18~dfsg~0-0ubuntu2
  • =9.18~dfsg~0-0ubuntu2.2
  • =9.18~dfsg~0-0ubuntu2.3
  • =9.18~dfsg~0-0ubuntu2.4
  • =9.18~dfsg~0-0ubuntu2.6
  • =9.18~dfsg~0-0ubuntu2.7
  • =9.18~dfsg~0-0ubuntu2.8
  • =9.18~dfsg~0-0ubuntu2.9
  • =9.25~dfsg+1-0ubuntu0.16.04.1
  • =9.25~dfsg+1-0ubuntu0.16.04.2
  • =9.25~dfsg+1-0ubuntu0.16.04.3
  • =9.26~dfsg+0-0ubuntu0.16.04.1
  • =9.26~dfsg+0-0ubuntu0.16.04.3
  • =9.26~dfsg+0-0ubuntu0.16.04.4
  • =9.26~dfsg+0-0ubuntu0.16.04.5
  • =9.26~dfsg+0-0ubuntu0.16.04.6
  • =9.26~dfsg+0-0ubuntu0.16.04.7
  • =9.26~dfsg+0-0ubuntu0.16.04.8
  • =9.26~dfsg+0-0ubuntu0.16.04.9
  • =9.26~dfsg+0-0ubuntu0.16.04.10
  • =9.26~dfsg+0-0ubuntu0.16.04.11
  • =9.26~dfsg+0-0ubuntu0.16.04.12
  • =9.26~dfsg+0-0ubuntu0.16.04.13
  • =9.26~dfsg+0-0ubuntu0.16.04.14
  • =9.26~dfsg+0-0ubuntu0.16.04.14+esm1
  • =9.26~dfsg+0-0ubuntu0.16.04.14+esm2
  • =9.26~dfsg+0-0ubuntu0.16.04.14+esm3
  • =9.26~dfsg+0-0ubuntu0.16.04.14+esm4
  • =9.26~dfsg+0-0ubuntu0.16.04.14+esm5
  • =9.26~dfsg+0-0ubuntu0.16.04.14+esm6
  • =9.26~dfsg+0-0ubuntu0.16.04.14+esm7
  • =9.26~dfsg+0-0ubuntu0.16.04.14+esm8
  • =9.26~dfsg+0-0ubuntu0.16.04.14+esm9
  • =9.26~dfsg+0-0ubuntu0.16.04.14+esm10
Fixed in–
Ubuntu:Pro:16.04:LTStexlive-binpkg:deb/ubuntu/texlive-bin@2015.20160222.37495-1ubuntu0.1+esm1?arch=source&distro=esm-infra/xenialOther threatsAffected
  • =2015.20150524.37493-5build1
  • =2015.20150524.37493-7
  • =2015.20150524.37493-7build1
  • =2015.20150524.37493-7build4
  • =2015.20160222.37495-1
  • =2015.20160222.37495-1ubuntu0.1
  • =2015.20160222.37495-1ubuntu0.1+esm1
Fixed in–
Ubuntu:16.04:LTSsmartpkg:deb/ubuntu/smart@1.4-2?arch=source&distro=xenialOther threatsAffected
  • =1.4-2
Fixed in–
Ubuntu:Pro:16.04:LTSvnc4pkg:deb/ubuntu/vnc4@4.1.1+xorg4.3.0-37.3ubuntu2.1+esm1?arch=source&distro=esm-apps/xenialOther threatsAffected
  • =4.1.1+xorg4.3.0-37.3ubuntu2
  • =4.1.1+xorg4.3.0-37.3ubuntu2.1+esm1
Fixed in–
Ubuntu:Pro:16.04:LTSxmlrpc-cpkg:deb/ubuntu/xmlrpc-c@1.33.14-1ubuntu1+esm1?arch=source&distro=esm-apps-legacy/xenialOther threatsAffected
  • =1.33.14-0.2ubuntu3
  • =1.33.14-1ubuntu1
  • =1.33.14-1ubuntu1+esm1
Fixed in–
Ubuntu:Pro:18.04:LTSapache2pkg:deb/ubuntu/apache2@2.4.29-1ubuntu4.27+esm11?arch=source&distro=esm-infra/bionicOther threatsAffected
  • =2.4.27-2ubuntu3
  • =2.4.29-1ubuntu1
  • =2.4.29-1ubuntu2
  • =2.4.29-1ubuntu3
  • =2.4.29-1ubuntu4
  • =2.4.29-1ubuntu4.1
  • =2.4.29-1ubuntu4.2
  • =2.4.29-1ubuntu4.3
  • =2.4.29-1ubuntu4.4
  • =2.4.29-1ubuntu4.5
  • =2.4.29-1ubuntu4.6
  • =2.4.29-1ubuntu4.7
  • =2.4.29-1ubuntu4.8
  • =2.4.29-1ubuntu4.10
  • =2.4.29-1ubuntu4.11
  • =2.4.29-1ubuntu4.12
  • =2.4.29-1ubuntu4.13
  • =2.4.29-1ubuntu4.14
  • =2.4.29-1ubuntu4.16
  • =2.4.29-1ubuntu4.17
  • =2.4.29-1ubuntu4.18
  • =2.4.29-1ubuntu4.19
  • =2.4.29-1ubuntu4.20
  • =2.4.29-1ubuntu4.21
  • =2.4.29-1ubuntu4.22
  • =2.4.29-1ubuntu4.23
  • =2.4.29-1ubuntu4.24
  • =2.4.29-1ubuntu4.25
  • =2.4.29-1ubuntu4.26
  • =2.4.29-1ubuntu4.27
  • =2.4.29-1ubuntu4.27+esm1
  • =2.4.29-1ubuntu4.27+esm2
  • =2.4.29-1ubuntu4.27+esm3
  • =2.4.29-1ubuntu4.27+esm4
  • =2.4.29-1ubuntu4.27+esm6
  • =2.4.29-1ubuntu4.27+esm7
  • =2.4.29-1ubuntu4.27+esm8
  • =2.4.29-1ubuntu4.27+esm9
  • =2.4.29-1ubuntu4.27+esm10
  • =2.4.29-1ubuntu4.27+esm11
Fixed in–
Ubuntu:18.04:LTSapr-utilpkg:deb/ubuntu/apr-util@1.6.1-2ubuntu0.1?arch=source&distro=bionicOther threatsAffected
  • =1.6.0-2
  • =1.6.1-1
  • =1.6.1-1ubuntu2
  • =1.6.1-2
  • =1.6.1-2ubuntu0.1
Fixed in–
Ubuntu:18.04:LTScmakepkg:deb/ubuntu/cmake@3.10.2-1ubuntu2.18.04.2?arch=source&distro=bionicOther threatsAffected
  • =3.9.1-1
  • =3.9.3-1
  • =3.9.5-1
  • =3.10.2-1
  • =3.10.2-1build1
  • =3.10.2-1ubuntu1
  • =3.10.2-1ubuntu2
  • =3.10.2-1ubuntu2.18.04.1
  • =3.10.2-1ubuntu2.18.04.2
Fixed in–
Ubuntu:Pro:18.04:LTSghostscriptpkg:deb/ubuntu/ghostscript@9.26~dfsg+0-0ubuntu0.18.04.18+esm5?arch=source&distro=esm-infra/bionicOther threatsAffected
  • =9.21~dfsg+1-0ubuntu3
  • =9.22~dfsg+1-0ubuntu1
  • =9.22~dfsg+1-0ubuntu1.1
  • =9.22~dfsg+1-0ubuntu1.2
  • =9.25~dfsg+1-0ubuntu0.18.04.1
  • =9.25~dfsg+1-0ubuntu0.18.04.2
  • =9.26~dfsg+0-0ubuntu0.18.04.1
  • =9.26~dfsg+0-0ubuntu0.18.04.3
  • =9.26~dfsg+0-0ubuntu0.18.04.4
  • =9.26~dfsg+0-0ubuntu0.18.04.5
  • =9.26~dfsg+0-0ubuntu0.18.04.6
  • =9.26~dfsg+0-0ubuntu0.18.04.7
  • =9.26~dfsg+0-0ubuntu0.18.04.8
  • =9.26~dfsg+0-0ubuntu0.18.04.9
  • =9.26~dfsg+0-0ubuntu0.18.04.10
  • =9.26~dfsg+0-0ubuntu0.18.04.11
  • =9.26~dfsg+0-0ubuntu0.18.04.12
  • =9.26~dfsg+0-0ubuntu0.18.04.13
  • =9.26~dfsg+0-0ubuntu0.18.04.14
  • =9.26~dfsg+0-0ubuntu0.18.04.15
  • =9.26~dfsg+0-0ubuntu0.18.04.16
  • =9.26~dfsg+0-0ubuntu0.18.04.17
  • =9.26~dfsg+0-0ubuntu0.18.04.18
  • =9.26~dfsg+0-0ubuntu0.18.04.18+esm1
  • =9.26~dfsg+0-0ubuntu0.18.04.18+esm2
  • =9.26~dfsg+0-0ubuntu0.18.04.18+esm3
  • =9.26~dfsg+0-0ubuntu0.18.04.18+esm4
  • =9.26~dfsg+0-0ubuntu0.18.04.18+esm5
Fixed in–
Ubuntu:Pro:18.04:LTStexlive-binpkg:deb/ubuntu/texlive-bin@2017.20170613.44572-8ubuntu0.2+esm1?arch=source&distro=esm-infra/bionicOther threatsAffected
  • =2017.20170613.44572-5build1
  • =2017.20170613.44572-5build2
  • =2017.20170613.44572-6
  • =2017.20170613.44572-6build1
  • =2017.20170613.44572-6ubuntu1
  • =2017.20170613.44572-8build1
  • =2017.20170613.44572-8ubuntu0.1
  • =2017.20170613.44572-8ubuntu0.2
  • =2017.20170613.44572-8ubuntu0.2+esm1
Fixed in–
Ubuntu:18.04:LTSsmartpkg:deb/ubuntu/smart@1.4-2?arch=source&distro=bionicOther threatsAffected
  • =1.4-2
Fixed in–
Ubuntu:18.04:LTSvnc4pkg:deb/ubuntu/vnc4@4.1.1+xorg4.3.0-37.3ubuntu2?arch=source&distro=bionicOther threatsAffected
  • =4.1.1+xorg4.3.0-37.3ubuntu2
Fixed in–
Ubuntu:Pro:18.04:LTSxmlrpc-cpkg:deb/ubuntu/xmlrpc-c@1.33.14-8ubuntu0.18.04.1~esm1?arch=source&distro=esm-apps/bionicOther threatsAffected
  • =1.33.14-7
  • =1.33.14-8
  • =1.33.14-8build1
  • =1.33.14-8ubuntu0.18.04.1~esm1
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Users should consult official Ubuntu or Apache advisories for updates or patches addressing this vulnerability.

Description

A vulnerability in the readfilemap.c component of expat before version 2.1.0 allows attackers to cause a denial of service by consuming file descriptors through a large number of crafted XML files. This affects certain Apache2 versions packaged in Ubuntu. No CVSS score is provided.

References

Community reviews

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