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CVE-2013-3587

19
FAUCET Score

CVE-2013-3587 describes a "BREACH" attack, where the HTTPS protocol, when used with compression in web applications (specifically F5 products), can leak sensitive information. Man-in-the-middle attackers can exploit differences in encrypted compressed data lengths to deduce plaintext secret values. This vulnerability has a CVSS score of 5.9 (Medium) due to its high impact on confidentiality, though it requires high attack complexity. While there is no known active exploitation or public exploit code, the vulnerability has garnered some community discussion, indicating awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
>= 10.1.0, <= 10.2.4CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
>= 11.0.0, <= 11.6.1CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
>= 12.0.0, <= 12.1.2CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
13.0.0CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_access_policy_manager:13.0.0:*:*:*:*:*:*:*
>= 11.3.0, <= 11.6.1CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
6.05%
Probability of exploitation in next 30 days
EPSS Percentile
92.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0605 is in the 91st percentile among its peer group of 19,955 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Vendor Patches (2)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: httpd
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: httpd

Vendor Advisories (1)

redhatCVE-2013-3587Moderate

BREACH attack against HTTP compression

Aug 2, 2013

References

breachattack.com
Third Party Advisory
github.com / meldium/breach-mitigation-rails
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
security.stackexchange.com / questions/20406/is-http-compression-safe
ExploitThird Party Advisory
hackerone.com / reports/254895
ExploitThird Party Advisory
slashdot.org / story/13/08/05/233216
Third Party Advisory
lists.apache.org / thread.html/r7f0e9cfd166934172d43ca4c272b8bdda4a343036229d9937affd1e1%40%3Cdev.httpd.apache.org%3E
support.f5.com / csp/article/K14634
Third Party Advisory
blackhat.com / us-13/briefings.html
Third Party Advisory
djangoproject.com / weblog/2013/aug/06/breach-and-django
Third Party Advisory
iacr.org / cryptodb/archive/2002/FSE/3091/3091.pdf
Third Party Advisory
kb.cert.org / vuls/id/987798
Third Party AdvisoryUS Government Resource