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CVE-2020-11728

19
FAUCET Score

CVE-2020-11728 describes a session management vulnerability in DAViCal Andrew's Web Libraries (AWL) through version 0.60, as well as DAViCal Debian Linux and Debian Andrew's Web Libraries. The flaw stems from the use of an easily guessable session key, allowing an attacker to impersonate a session by predicting the microsecond timestamp and incrementing session ID. This vulnerability carries a CVSS score of 7.5 (HIGH), indicating a network-based attack with low complexity, requiring no user interaction, and potentially leading to high confidentiality impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.60CPE matchmatch criteria
cpe:2.3:a:davical:andrew\'s_web_libraries:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.59%
Probability of exploitation in next 30 days
EPSS Percentile
73.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0159 is in the 55th percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

Remediation records are not available for this CVE.

References

bugs.debian.org / cgi-bin/bugreport.cgi
Mailing ListThird Party Advisory
gitlab.com / davical-project/awl/-/issues/19
Issue TrackingThird Party Advisory
lists.debian.org / debian-lts-announce/2020/04/msg00011.html
Mailing ListThird Party Advisory
usn.ubuntu.com / 4539-1
debian.org / security/2020/dsa-4660
Third Party Advisory