Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2009-1856

35
FAUCET Score

CVE-2009-1856 describes an integer overflow vulnerability in Adobe Reader and Acrobat versions 7, 8, and 9, specifically affecting the FlateDecode filter when processing PDF files with unspecified parameters. This flaw can lead to a denial of service or potentially arbitrary code execution due to a resultant heap-based buffer overflow. With a CVSS score of 9.3, this vulnerability is considered critical, requiring no authentication and moderate attack complexity, with complete impact on confidentiality, integrity, and availability. Despite its high severity and FAUCET Risk Score of 95/100, there is no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
7.0CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat:7.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat:7.0:*:professional:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat:7.0:*:standard:*:*:*:*:*
7.0.1CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat:7.0.1:*:*:*:*:*:*:*
7.0.1CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat:7.0.1:*:professional:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
13.86%
Probability of exploitation in next 30 days
EPSS Percentile
96.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1386 is in the 80th percentile among its peer group of 8,918 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

adobepatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Extras for RHEL 3Fixed in: acroread-0:8.1.6-1
View patch
redhatpatch availablevia redhat_api
Product: Extras for RHEL 4Fixed in: acroread-0:8.1.6-1.el4
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 5Fixed in: acroread-0:8.1.6-2.el5
View patch

Vendor Advisories (1)

redhatCVE-2009-1856Critical

acroread: multiple security fixes in version 8.1.6 (APSB09-07)

Jun 9, 2009

References

labs.idefense.com / intelligence/vulnerabilities/display.php
lists.opensuse.org / opensuse-security-announce/2009-07/msg00000.html
lists.opensuse.org / opensuse-security-announce/2009-07/msg00002.html
secunia.com / advisories/34580
Vendor Advisory
secunia.com / advisories/35496
Vendor Advisory
secunia.com / advisories/35655
Vendor Advisory
secunia.com / advisories/35685
Vendor Advisory
secunia.com / advisories/35734
Vendor Advisory
security.gentoo.org / glsa/glsa-200907-06.xml
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/51021
adobe.com / support/security/bulletins/apsb09-07.html
PatchVendor Advisory
redhat.com / support/errata/RHSA-2009-1109.html
securityfocus.com / bid/35274
securityfocus.com / bid/35294
us-cert.gov / cas/techalerts/TA09-161A.html
US Government Resource
vupen.com / english/advisories/2009/1547
PatchVendor Advisory