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No exploitation reportedFix available

CVE-2018-12900

No exploitation reported by the sources we read.

  • Published2018-06-26
  • WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Heap-based buffer overflow in the cpSeparateBufToContigBuf function in tiffcp.c in LibTIFF 3.9.3, 3.9.4, 3.9.5, 3.9.6, 3.9.7, 4.0.0beta7, 4.0.0alpha4, 4.0.0alpha5, 4.0.0alpha6, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.4beta, 4.0.5, 4.0.6, 4.0.7, 4.0.8 and 4.0.9 allows remote attackers to cause a denial of service (crash) or possibly have unspecified other impact via a crafted TIFF file.

Timeline

dates in UTC
  1. 2018-06-2622:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-04 03:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-12900?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-12900?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Libtiff
BranchAffectedFixed in
4.0= 4.0.9no fix published
Canonical ubuntu linux
BranchAffectedFixed in
14.4= 14.04no fix published
16.4= 16.04no fix published
18.4= 18.04no fix published
18.10= 18.10no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • libtiffRed Hat:enterprise_linux:8::appstreamall versions · fixed in 0:4.0.9-15.el8and 4 other packages
  • libtiffRed Hat:enterprise_linux:7::workstationall versions · fixed in 0:4.0.3-32.el7and 4 other packages
  • libtiffRed Hat:enterprise_linux:7::serverall versions · fixed in 0:4.0.3-32.el7and 4 other packages
  • libtiffRed Hat:enterprise_linux:7::computenodeall versions · fixed in 0:4.0.3-32.el7and 4 other packages
  • libtiffRed Hat:enterprise_linux:7::clientall versions · fixed in 0:4.0.3-32.el7and 4 other packages
  • libtiffMageia:6all versions · fixed in 4.0.9-1.9.mga6
  • libtiff-toolsRed Hat:enterprise_linux:8::crball versions · fixed in 0:4.0.9-15.el8and 3 other packages
  • tiffUbuntu:18.04:LTSall versions · fixed in 4.0.9-5ubuntu0.2

42 more package ranges on OSV.dev

Vendor advisories

  • CVE-2018-12900 Red Hat Product Security324 products fixed · 5 known affected

    libtiff: Heap-based buffer overflow in the cpSeparateBufToContigBuf function resulting in a denial of service or possibly code execution

    libtiff as a component of Red Hat Enterprise Linux 5 · libtiff as a component of Red Hat Enterprise Linux 6 · libtiff-devel as a component of Red Hat Enterprise Linux 6 · +2 more

  • RHSA-2019:3419 Red Hat Product Security42 products fixed

    Red Hat Security Advisory: libtiff security update

  • RHSA-2019:2053 Red Hat Product Security76 products fixed

    Red Hat Security Advisory: libtiff security update

Full record on NVD

Fix

  1. Vendor fix Red Hat Product Security RHSA-2019:3419 · 42 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running applications linked against libtiff must be restarted for this update to take effect.
  2. No fix planned, says the vendor Red Hat Product Security CVE-2018-12900 · 5 productsWill not fix

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.08.8read 2026-10-23
  • NVDCVSS 2.06.8read 2026-10-23
  • NVDweakness (CWE)CWE-787read 2026-10-23
  • FIRST EPSSEPSS score24.8 %read 2026-11-03
  • OSVaffected packages—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2018-06-26
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2018-12900?

Heap-based buffer overflow in the cpSeparateBufToContigBuf function in tiffcp.c in LibTIFF 3.9.3, 3.9.4, 3.9.5, 3.9.6, 3.9.7, 4.0.0beta7, 4.0.0alpha4, 4.0.0alpha5, 4.0.0alpha6, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.4beta, 4.0.5, 4.0.6, 4.0.7, 4.0.8 and 4.0.9 allows remote attackers to cause a denial of service (crash) or possibly have unspecified other impact via a crafted TIFF file.

Is CVE-2018-12900 actively exploited?

Active exploitation of CVE-2018-12900 has not been confirmed. Its EPSS score was 24.8% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-12900?

CVE-2018-12900 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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