CVE-2015-0838

Buffer overflow in the C implementation of the apply_delta function in _pack.c in Dulwich before 0.9.9 allows remote attackers to execute arbitrary code via a crafted pack file.

Published: 2015-03-31 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-0838 is rated Moderate Risk (54.9/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.81%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-0838

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-05-03 10.12% 2.81% -7.31%
2 2025-03-30 9.65% 10.12% +0.47%
3 2025-03-29 — 9.65% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-0838

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2015-0838

GitHub Security Advisory for CVE-2015-0838

GHSA-vjjf-3rvg-gv3v · Severity: critical · Ecosystem: pip — Dulwich Buffer Overflow when handling pack files

OS Trackers for CVE-2015-0838

vendor priority summary link
debian not yet assigned CVE-2015-0838 not yet assigned priority: Debian including 1 source packages (dulwich), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2015-0838
ubuntu medium CVE-2015-0838 medium priority: Ubuntu including 1 source packages (dulwich), 14 status rows across 14 suites (artful, bionic, cosmic, disco, lucid, precise, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 8, ignored 3, released 2, DNE 1. https://ubuntu.com/security/CVE-2015-0838

Affected software / configurations for CVE-2015-0838

Vendor Product Version Raw CPE
debian debian_linux 7.0 cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
dulwich_project dulwich <= 0.9.8 cpe:2.3:a:dulwich_project:dulwich:*:*:*:*:*:*:*:*

References for CVE-2015-0838

cvelogic Threat Intelligence