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CVE-2015-1822

18
FAUCET Score

CVE-2015-1822 describes an uninitialized pointer dereference vulnerability in chrony versions prior to 1.31.1, affecting Debian and TuxFamily chrony implementations. An authenticated remote attacker can exploit this flaw by sending numerous command requests, leading to a denial of service (daemon crash) or potentially arbitrary code execution. With a CVSS score of 6.5, this vulnerability has a low attack complexity and requires authentication. There is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
<= 1.31CPE matchmatch criteria
cpe:2.3:a:tuxfamily:chrony:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.5MEDIUM

AV:N/AC:L/Au:S/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Exploitability Score
8.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.96%
Probability of exploitation in next 30 days
EPSS Percentile
85.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0296 is in the 95th percentile among its peer group of 21,958 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, 0.0 Mastodon, and 0.1 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

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: chrony-0:2.1.1-1.el7
View patch

Vendor Advisories (1)

redhatCVE-2015-1822Moderate

chrony: uninitialized pointer in cmdmon reply slots

Apr 7, 2015

References

listengine.tuxfamily.org / chrony.tuxfamily.org/chrony-announce/2015/04/msg00002.html
PatchVendor Advisory
security.gentoo.org / glsa/201507-01
debian.org / security/2015/dsa-3222
oracle.com / technetwork/topics/security/linuxbulletinoct2015-2719645.html
securityfocus.com / bid/73956